musescore/MuseScore
Oct 2024 – Oct 2025
13 Months active
Languages Used
C++XMLQMLJavaScriptUITextCUIH
Technical Skills
C++Code RefactoringConfiguration ManagementData ValidationMusic Notation SoftwareQt Framework
Michele Spagnolo
PROFILE
Michele Spagnolo
Over thirteen months, Marco Spagnolo engineered core features and stability improvements for the musescore/MuseScore repository, focusing on music notation rendering, editing workflows, and UI/UX enhancements. He delivered robust solutions for rest layout, time signature handling, and cross-staff interactions, while refactoring layout algorithms and expanding automated test coverage. Using C++ and the Qt framework, Marco addressed complex multi-voice and multi-part scenarios, improved memory safety, and streamlined code organization for maintainability. His work included implementing new engraving options, refining template and palette management, and integrating visual test harnesses, resulting in a more reliable, user-friendly, and future-proof notation software platform.
Overall Statistics
Feature vs Bugs
42%Features
Repository Contributions
637Total
Bugs
222
Commits
637
Features
162
Lines of code
174,185
Activity Months13
Your Network
82 people
Work History
October 2025
23 Commits • 6 Features
Oct 1, 2025October 2025 (musescore/MuseScore) delivered tangible improvements in rendering accuracy, reliability, and testing workflows. Key features delivered included rest grouping logic improvements for multi-voice measures, barlines backup/restore cleanup, backup support for measure repeat properties, and a new UI for natural key signatures. Notable bug fixes included stem-note padding alignment, Pid::VISIBLE protection for chords, memory-safety improvements (clearing vectors after delete), and layout simplifications when all staves are invisible. The introduction of vtest tooling accelerated verification, and the work collectively reduces edge-case rendering failures, improves maintainability, and adds user-facing capabilities, delivering strong business value by improving score correctness, stability, and developer productivity.
23 Commits • 6 Features
Oct 1, 2025October 2025 (musescore/MuseScore) delivered tangible improvements in rendering accuracy, reliability, and testing workflows. Key features delivered included rest grouping logic improvements for multi-voice measures, barlines backup/restore cleanup, backup support for measure repeat properties, and a new UI for natural key signatures. Notable bug fixes included stem-note padding alignment, Pid::VISIBLE protection for chords, memory-safety improvements (clearing vectors after delete), and layout simplifications when all staves are invisible. The introduction of vtest tooling accelerated verification, and the work collectively reduces edge-case rendering failures, improves maintainability, and adds user-facing capabilities, delivering strong business value by improving score correctness, stability, and developer productivity.
October 2025
September 2025
80 Commits • 16 Features
Sep 1, 2025September 2025 (2025-09) monthly summary for musescore/MuseScore: Achieved important feature deliveries and stability fixes that improve editing workflows, reliability, and rendering quality. Key features delivered: Fret diagram autoplace improvements; right-margin lyric space; UI/UX visibility and wording updates; SMuFL-based stem positioning; test scaffolding and vtest updates. Major bugs fixed: HOPO grace-note crash; layout/staff handling across parts (staves, anchors, system locks); harmonies and mmRest interactions; various notation correctness fixes (font size, grace-note alignment, bend vs accidental); undo/redo integrity for empty segments. Overall impact: smoother editing experience, fewer regressions, and higher confidence in large-score projects; broader automated testing. Technologies/skills demonstrated: C++/Qt UI fixes, advanced layout algorithms, SMuFL anchors, test scaffolding, and code refactoring for cleaner separation and maintainability.
September 2025
80 Commits • 16 Features
Sep 1, 2025September 2025 (2025-09) monthly summary for musescore/MuseScore: Achieved important feature deliveries and stability fixes that improve editing workflows, reliability, and rendering quality. Key features delivered: Fret diagram autoplace improvements; right-margin lyric space; UI/UX visibility and wording updates; SMuFL-based stem positioning; test scaffolding and vtest updates. Major bugs fixed: HOPO grace-note crash; layout/staff handling across parts (staves, anchors, system locks); harmonies and mmRest interactions; various notation correctness fixes (font size, grace-note alignment, bend vs accidental); undo/redo integrity for empty segments. Overall impact: smoother editing experience, fewer regressions, and higher confidence in large-score projects; broader automated testing. Technologies/skills demonstrated: C++/Qt UI fixes, advanced layout algorithms, SMuFL anchors, test scaffolding, and code refactoring for cleaner separation and maintainability.
August 2025
97 Commits • 24 Features
Aug 1, 2025August 2025 MuseScore (musescore/MuseScore) monthly summary focusing on business value and technical achievements. This month emphasized delivering notation capabilities, UI/layout improvements, and a broad stability/quality sweep across the codebase. The work enabled richer notation, more robust editing, and faster validation cycles, supporting a better product experience for users and a stronger foundation for future development.
97 Commits • 24 Features
Aug 1, 2025August 2025 MuseScore (musescore/MuseScore) monthly summary focusing on business value and technical achievements. This month emphasized delivering notation capabilities, UI/layout improvements, and a broad stability/quality sweep across the codebase. The work enabled richer notation, more robust editing, and faster validation cycles, supporting a better product experience for users and a stronger foundation for future development.
August 2025
July 2025
59 Commits • 24 Features
Jul 1, 2025July 2025 performance summary for musescore/MuseScore: Delivered substantial editing UX improvements, architecture refinements, and UI alignment upgrades to support a smooth upgrade path to 4.6. We stabilized the unit test suite, refined editing flows (including moving editing logic out of edit(), integrating drag-based edits, and modernizing anchoring), and advanced the anchoring infrastructure with a dedicated MoveElementAnchors class. These efforts reduce editing friction for composers, improve correctness in complex notation interactions, and strengthen testing and release readiness.
July 2025
59 Commits • 24 Features
Jul 1, 2025July 2025 performance summary for musescore/MuseScore: Delivered substantial editing UX improvements, architecture refinements, and UI alignment upgrades to support a smooth upgrade path to 4.6. We stabilized the unit test suite, refined editing flows (including moving editing logic out of edit(), integrating drag-based edits, and modernizing anchoring), and advanced the anchoring infrastructure with a dedicated MoveElementAnchors class. These efforts reduce editing friction for composers, improve correctness in complex notation interactions, and strengthen testing and release readiness.
June 2025
25 Commits • 12 Features
Jun 1, 2025June 2025: Delivered a mix of feature enhancements, stability fixes, and testing improvements across MuseScore. Business value focused on improving notation templates, expanding Volta options, and strengthening stability and test coverage to reduce time-to-value and regression risk.
25 Commits • 12 Features
Jun 1, 2025June 2025: Delivered a mix of feature enhancements, stability fixes, and testing improvements across MuseScore. Business value focused on improving notation templates, expanding Volta options, and strengthening stability and test coverage to reduce time-to-value and regression risk.
June 2025
May 2025
55 Commits • 14 Features
May 1, 2025May 2025 contributions focused on reliability and notation fidelity in MuseScore. Key outcomes include a rest layout and alignment overhaul with local time-signature aware rest creation, interruption points logic enhancements for accurate placement, and a spanner layout fix in continuous view. Also introduced system-coordinate visibility via EngravingItem::systemPos, improved horizontal spacing by accounting for articulations and fermatas and scaling fermatas with magnitude, plus UI/UX enhancements for HOPO handling and new lyrics options. Strengthened quality through testing scaffolding and targeted unit-test fixes.
May 2025
55 Commits • 14 Features
May 1, 2025May 2025 contributions focused on reliability and notation fidelity in MuseScore. Key outcomes include a rest layout and alignment overhaul with local time-signature aware rest creation, interruption points logic enhancements for accurate placement, and a spanner layout fix in continuous view. Also introduced system-coordinate visibility via EngravingItem::systemPos, improved horizontal spacing by accounting for articulations and fermatas and scaling fermatas with magnitude, plus UI/UX enhancements for HOPO handling and new lyrics options. Strengthened quality through testing scaffolding and targeted unit-test fixes.
April 2025
71 Commits • 15 Features
Apr 1, 2025April 2025 — MuseScore (musescore/MuseScore): Focused on engraving correctness, layout stability, and expanded testing/integration. Delivered core fixes to time-signature handling and measure boundaries, plus robust rehearsal mark printing rules and system layout calculations. Introduced Read460 module integration, cross-beam spacing improvements, and a broader set of UI/testing enhancements. Strengthened code quality with refactors, crash fixes, and compiler-warning suppressions, while extending test coverage to 4.60 compatibility. These efforts reduce engraving edge cases, improve print fidelity, and enable smoother onboarding for 4.60 workflows.
71 Commits • 15 Features
Apr 1, 2025April 2025 — MuseScore (musescore/MuseScore): Focused on engraving correctness, layout stability, and expanded testing/integration. Delivered core fixes to time-signature handling and measure boundaries, plus robust rehearsal mark printing rules and system layout calculations. Introduced Read460 module integration, cross-beam spacing improvements, and a broader set of UI/testing enhancements. Strengthened code quality with refactors, crash fixes, and compiler-warning suppressions, while extending test coverage to 4.60 compatibility. These efforts reduce engraving edge cases, improve print fidelity, and enable smoother onboarding for 4.60 workflows.
April 2025
March 2025
69 Commits • 13 Features
Mar 1, 2025March 2025 — MuseScore dev work focused on delivering high-value UX improvements, stabilizing the codebase, and strengthening testing. Key features and workflow enhancements were paired with targeted bug fixes and quality improvements to boost editor speed, reliability, and accessibility. Results include smoother text editing, more robust grace-note layout in continuous view, improved drag behavior, and accessible UI refinements, underpinned by solid test scaffolding and code quality fixes.
March 2025
69 Commits • 13 Features
Mar 1, 2025March 2025 — MuseScore dev work focused on delivering high-value UX improvements, stabilizing the codebase, and strengthening testing. Key features and workflow enhancements were paired with targeted bug fixes and quality improvements to boost editor speed, reliability, and accessibility. Results include smoother text editing, more robust grace-note layout in continuous view, improved drag behavior, and accessible UI refinements, underpinned by solid test scaffolding and code quality fixes.
February 2025
89 Commits • 20 Features
Feb 1, 2025February 2025 performance summary for musescore/MuseScore: Delivered major feature work and stability improvements across engraving, UI, and testing; implemented a new color palette, Illustrator compatibility, and vtest testing infrastructure; improved performance for masking; enhanced cross-staff handling; refined system objects workflow; and strengthened code quality and documentation. The work accelerates user-visible engraving accuracy, rendering performance, and maintainability, enabling faster release cycles and a smoother authoring experience.
89 Commits • 20 Features
Feb 1, 2025February 2025 performance summary for musescore/MuseScore: Delivered major feature work and stability improvements across engraving, UI, and testing; implemented a new color palette, Illustrator compatibility, and vtest testing infrastructure; improved performance for masking; enhanced cross-staff handling; refined system objects workflow; and strengthened code quality and documentation. The work accelerates user-visible engraving accuracy, rendering performance, and maintainability, enabling faster release cycles and a smoother authoring experience.
February 2025
January 2025
35 Commits • 8 Features
Jan 1, 20252025-01 monthly summary for musescore/MuseScore focusing on delivering core scoring features, stability, and testing/UX improvements. Key outcomes include local time signatures across parts with integrity fixes, rollout of Big Time Signatures, major stability enhancements across editing/undo/measure operations, and rendering/UX enhancements (SVG clipPath, masking, and style compatibility). Expanded testing coverage (vtests and unit tests) increased regression safety and code quality. These changes enable more complex scores, reduce crash risk, and improve interoperability and maintainability of the codebase.
January 2025
35 Commits • 8 Features
Jan 1, 20252025-01 monthly summary for musescore/MuseScore focusing on delivering core scoring features, stability, and testing/UX improvements. Key outcomes include local time signatures across parts with integrity fixes, rollout of Big Time Signatures, major stability enhancements across editing/undo/measure operations, and rendering/UX enhancements (SVG clipPath, masking, and style compatibility). Expanded testing coverage (vtests and unit tests) increased regression safety and code quality. These changes enable more complex scores, reduce crash risk, and improve interoperability and maintainability of the codebase.
December 2024
8 Commits • 3 Features
Dec 1, 2024December 2024 focused on strengthening engraving stability, data integrity, and editing UX in musescore/MuseScore. Major work includes stabilizing EID handling across all partScore objects with backend API integration, preventing crashes when EIDs are missing, extending rhythmic anchoring to all TextBase items for better version compatibility and edit flow, and introducing an EID backward-compatibility save option to ease score migrations. Additional reliability improvements covered stem/beam dragging, cross-staff slur handling to prevent crashes, and dynamic markings alignment with segment duration, supported by new tests (e.g., dynamics-11.mscz). These changes enhance stability across editing workflows, preserve score integrity, and enable smoother collaboration and migration.
8 Commits • 3 Features
Dec 1, 2024December 2024 focused on strengthening engraving stability, data integrity, and editing UX in musescore/MuseScore. Major work includes stabilizing EID handling across all partScore objects with backend API integration, preventing crashes when EIDs are missing, extending rhythmic anchoring to all TextBase items for better version compatibility and edit flow, and introducing an EID backward-compatibility save option to ease score migrations. Additional reliability improvements covered stem/beam dragging, cross-staff slur handling to prevent crashes, and dynamic markings alignment with segment duration, supported by new tests (e.g., dynamics-11.mscz). These changes enhance stability across editing workflows, preserve score integrity, and enable smoother collaboration and migration.
December 2024
November 2024
19 Commits • 4 Features
Nov 1, 2024November 2024 — MusScore (musescore/MuseScore) delivered a focused set of features and reliability improvements that enhance testing coverage, user-facing rendering behavior, and data integrity, while accelerating development velocity through refactoring and UI/backend refinements.
November 2024
19 Commits • 4 Features
Nov 1, 2024November 2024 — MusScore (musescore/MuseScore) delivered a focused set of features and reliability improvements that enhance testing coverage, user-facing rendering behavior, and data integrity, while accelerating development velocity through refactoring and UI/backend refinements.
October 2024
7 Commits • 3 Features
Oct 1, 2024Month: 2024-10 | Repository: musescore/MuseScore Key features delivered: - UI Improvement: Scrollable style editor for rests settings. Adds QScrollArea to editstyle.ui sections 'Rests (multiple voices)' and 'Multimeasure rests' to improve usability for lengthy settings (commit 18e3ac4f9d66de0b56deec08a36e82414d6a2ae1). - Code maintainability: Rename constant in slur layout calculation for better readability in long slur limit calculation (commit ba72fd5a70353dba90c857904d064b48c74a82c0). - Test suite expansion: Expanded test suite with new test score files and adjusted test references/configurations to standardize outcomes (commits e5f935029e290d25cb5cea5c792f5969fc1b1d90; 7b48aa1d1f542540d64ef33768a32ccad4007134; 4a1867e2e671caf5243a74678785789d355461a8). - Rest layout improvement: Handle whole and breve rests correctly, refining the compute Whole/ Breve rest offset logic (commit 15d68312bfb98df452c9f199359d95a9833a3a1f). Major bugs fixed: - Bug fix: Correct mmRestNumberPos reading in tread parsing by removing a redundant condition and fixing property read, preventing parsing errors (commit e4e8a8032ce5ee89b1b253c25da3105d52938c89). - Rest layout correction: Ensure correct positioning for entire/rest breve rests by refining rest layout calculations (commit 15d68312bfb98df452c9f199359d95a9833a3a1f). Overall impact and accomplishments: - Enhanced editor usability for complex rest settings, reducing time-to-configure by users working with multi-voice scores. - Increased code readability and maintainability through targeted refactors, supporting future feature work with lower risk. - Strengthened release confidence via expanded and stabilized test coverage, including new test data and standardized outcomes. - More accurate musical layout, reducing misplacements of rests and improving engraving quality in long scores. Technologies/skills demonstrated: - Qt UI patterns (QScrollArea integration in a Qt-based UI) and C++ code refactoring for clarity. - Test engineering: test suite expansion (vtest/utest), test data management, and configuration fixes to ensure reliable test results. - Algorithmic layout work: rest and slur layout computations, including handling of complex cases like breve rests. - Focus on business value: improved editor usability drives productivity, robust parsing reduces support risk, and stronger tests support reliable releases.
7 Commits • 3 Features
Oct 1, 2024Month: 2024-10 | Repository: musescore/MuseScore Key features delivered: - UI Improvement: Scrollable style editor for rests settings. Adds QScrollArea to editstyle.ui sections 'Rests (multiple voices)' and 'Multimeasure rests' to improve usability for lengthy settings (commit 18e3ac4f9d66de0b56deec08a36e82414d6a2ae1). - Code maintainability: Rename constant in slur layout calculation for better readability in long slur limit calculation (commit ba72fd5a70353dba90c857904d064b48c74a82c0). - Test suite expansion: Expanded test suite with new test score files and adjusted test references/configurations to standardize outcomes (commits e5f935029e290d25cb5cea5c792f5969fc1b1d90; 7b48aa1d1f542540d64ef33768a32ccad4007134; 4a1867e2e671caf5243a74678785789d355461a8). - Rest layout improvement: Handle whole and breve rests correctly, refining the compute Whole/ Breve rest offset logic (commit 15d68312bfb98df452c9f199359d95a9833a3a1f). Major bugs fixed: - Bug fix: Correct mmRestNumberPos reading in tread parsing by removing a redundant condition and fixing property read, preventing parsing errors (commit e4e8a8032ce5ee89b1b253c25da3105d52938c89). - Rest layout correction: Ensure correct positioning for entire/rest breve rests by refining rest layout calculations (commit 15d68312bfb98df452c9f199359d95a9833a3a1f). Overall impact and accomplishments: - Enhanced editor usability for complex rest settings, reducing time-to-configure by users working with multi-voice scores. - Increased code readability and maintainability through targeted refactors, supporting future feature work with lower risk. - Strengthened release confidence via expanded and stabilized test coverage, including new test data and standardized outcomes. - More accurate musical layout, reducing misplacements of rests and improving engraving quality in long scores. Technologies/skills demonstrated: - Qt UI patterns (QScrollArea integration in a Qt-based UI) and C++ code refactoring for clarity. - Test engineering: test suite expansion (vtest/utest), test data management, and configuration fixes to ensure reliable test results. - Algorithmic layout work: rest and slur layout computations, including handling of complex cases like breve rests. - Focus on business value: improved editor usability drives productivity, robust parsing reduces support risk, and stronger tests support reliable releases.
October 2024
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Quality Metrics
Correctness85.2%
Maintainability86.4%
Architecture80.8%
Performance79.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
CC++CMakeJSONJavaScriptQMLQtTextUIUIH
Technical Skills
AccessibilityAlgorithm DesignAlgorithm ImplementationAlgorithm ImprovementAlgorithm RefactoringAlgorithmic DesignAlgorithmic ImprovementAlgorithmic LayoutBackend DevelopmentBackward CompatibilityBeam LayoutBug FixBug FixingBuild SystemsC++
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