musescore/MuseScore
Dec 2024 – Dec 2025
10 Months active
Languages Used
C++XMLCMakeJavaScriptQMLShell
Technical Skills
File Import/ExportGuitar Tablature SoftwareC++Import/Export FunctionalityTablature HandlingBug Fixing
mikekirin
PROFILE
Mikekirin
Over ten months, contributed to musescore/MuseScore by developing and refining features for guitar tablature import, music notation rendering, and automated testing. Leveraging C++, QML, and shell scripting, addressed complex import scenarios such as 9-string and 10-line tablature, improved Guitar Pro file compatibility, and enhanced Unicode text rendering. Implemented robust bug fixes for pitch calculation, dead note display, and surrogate pair handling, while expanding visual regression testing for small screens and optimizing CI workflows. The work emphasized data fidelity, cross-device reliability, and maintainable code, supporting both end-user experience and internal quality assurance across MuseScore’s music notation platform.
Overall Statistics
Feature vs Bugs
46%Features
Repository Contributions
15Total
Bugs
7
Commits
15
Features
6
Lines of code
18,584
Activity Months10
Your Network
121 peopleSame Organization
@mu.se5
Gabriel de Freitas SartoriMember
Grzegorz WojciechowskiMember
iliasmuseMember
James MizenMember
Michele SpagnoloMember
Work History
December 2025
2 Commits • 1 Features
Dec 1, 2025December 2025 performance highlights: Delivered two targeted improvements in musescore/MuseScore that enhance document rendering fidelity and Unicode correctness. Features delivered: Footer Presentation Enhancement — Appends copyright text to odd/even footers in the converter's document rendering, improving professionalism and consistency of exported scores. This change strengthens branding and compliance across output formats. Major bugs fixed: Unicode Surrogate Pair Rendering Fix — Corrects UTF-16 surrogate pair handling in text layout rendering, ensuring accurate bounding boxes and eliminating rendering glitches for high surrogate characters. Impact: These changes improve output fidelity, reduce rendering errors for users with extended character sets, and decrease support load on rendering issues. Technologies/skills demonstrated: C++ rendering pipeline work, Unicode handling in text layout, code refactoring and review, and cross-functional collaboration to deliver stable, high-quality exports. Business value: Higher-quality exports, improved user experience, and increased reliability of the rendering pipeline, supporting professional usage and broader character support.
2 Commits • 1 Features
Dec 1, 2025December 2025 performance highlights: Delivered two targeted improvements in musescore/MuseScore that enhance document rendering fidelity and Unicode correctness. Features delivered: Footer Presentation Enhancement — Appends copyright text to odd/even footers in the converter's document rendering, improving professionalism and consistency of exported scores. This change strengthens branding and compliance across output formats. Major bugs fixed: Unicode Surrogate Pair Rendering Fix — Corrects UTF-16 surrogate pair handling in text layout rendering, ensuring accurate bounding boxes and eliminating rendering glitches for high surrogate characters. Impact: These changes improve output fidelity, reduce rendering errors for users with extended character sets, and decrease support load on rendering issues. Technologies/skills demonstrated: C++ rendering pipeline work, Unicode handling in text layout, code refactoring and review, and cross-functional collaboration to deliver stable, high-quality exports. Business value: Higher-quality exports, improved user experience, and increased reliability of the rendering pipeline, supporting professional usage and broader character support.
December 2025
November 2025
3 Commits • 1 Features
Nov 1, 2025November 2025 — musescore/MuseScore: Delivered critical rendering fix for dead notes in tablature with negative frets and introduced configurable batch-conversion options to improve output control and licensing visibility. These changes enhance reliability for score rendering and automation for document conversion while ensuring copyright information is consistently applied across documents.
November 2025
3 Commits • 1 Features
Nov 1, 2025November 2025 — musescore/MuseScore: Delivered critical rendering fix for dead notes in tablature with negative frets and introduced configurable batch-conversion options to improve output control and licensing visibility. These changes enhance reliability for score rendering and automation for document conversion while ensuring copyright information is consistently applied across documents.
September 2025
1 Commits
Sep 1, 2025Monthly summary for 2025-09 (musescore/MuseScore): Implemented a critical bug fix to upgrade prebend handling for Guitar Pro score imports. Corrected pitch calculation for notes within chords when guitar bends are imported and ensured prebends are represented accurately. Updated test references to validate the corrected behavior. This work enhances import accuracy, data integrity, and reduces post-import corrections.
1 Commits
Sep 1, 2025Monthly summary for 2025-09 (musescore/MuseScore): Implemented a critical bug fix to upgrade prebend handling for Guitar Pro score imports. Corrected pitch calculation for notes within chords when guitar bends are imported and ensured prebends are represented accurately. Updated test references to validate the corrected behavior. This work enhances import accuracy, data integrity, and reduces post-import corrections.
September 2025
July 2025
1 Commits • 1 Features
Jul 1, 2025July 2025 - MuseScore (musescore/MuseScore): Focused on increasing cross-device rendering reliability by expanding the vtest suite with small-screen validation tests. Delivered a targeted set of test files to validate accurate notation rendering at small display sizes, strengthening QA coverage and device compatibility. Major bugs fixed: none reported this month. Overall impact: improved release confidence, broader accessibility across devices, and groundwork for expanded test coverage. Technologies/skills demonstrated: vtest framework usage, test-file authoring, cross-device QA, and commit traceability.
July 2025
1 Commits • 1 Features
Jul 1, 2025July 2025 - MuseScore (musescore/MuseScore): Focused on increasing cross-device rendering reliability by expanding the vtest suite with small-screen validation tests. Delivered a targeted set of test files to validate accurate notation rendering at small display sizes, strengthening QA coverage and device compatibility. Major bugs fixed: none reported this month. Overall impact: improved release confidence, broader accessibility across devices, and groundwork for expanded test coverage. Technologies/skills demonstrated: vtest framework usage, test-file authoring, cross-device QA, and commit traceability.
June 2025
3 Commits • 1 Features
Jun 1, 2025Monthly summary for 2025-06 (MuseScore repository): This month focused on expanding UI test coverage for small screens and improving dropdown reliability, delivering two features and CI enhancements that enable faster feedback and higher confidence in releases. Key features delivered: - Visual regression testing enhancements for small screens and CI: added vtest config for small screens, refactored test options, updated workflow to include small-screen comparisons, and enabled gp visual tests in CI with supporting score/style assets. Commits: 3171519656e31718134e42f2bf61dddc87eade1c; d1a043dec1d4e381c4b483292920f87c659b3fd7. - StyledDropdown areEqual utility to fix value comparison: robust value matching using strict and deep object comparisons, improving reliability of selection/display. Commit: e980a724de58199c6facbcebb673772381ffe3a3. Major bugs fixed: - Fixed incorrect value selection/display in StyledDropdown by introducing areEqual with strict and deep object comparisons. Commit: e980a724de58199c6facbcebb673772381ffe3a3. Overall impact and accomplishments: - Increased test coverage for small-screen UI, improved CI reliability for visual regression tests, and faster feedback on UI changes. - Reduced manual QA load through automated visuals and more robust component behavior. Technologies/skills demonstrated: - Visual regression testing, CI workflow optimization, test configuration refactoring, and robust dropdown value handling via areEqual. - Effective traceability with commit references to feature and bugfix work.
3 Commits • 1 Features
Jun 1, 2025Monthly summary for 2025-06 (MuseScore repository): This month focused on expanding UI test coverage for small screens and improving dropdown reliability, delivering two features and CI enhancements that enable faster feedback and higher confidence in releases. Key features delivered: - Visual regression testing enhancements for small screens and CI: added vtest config for small screens, refactored test options, updated workflow to include small-screen comparisons, and enabled gp visual tests in CI with supporting score/style assets. Commits: 3171519656e31718134e42f2bf61dddc87eade1c; d1a043dec1d4e381c4b483292920f87c659b3fd7. - StyledDropdown areEqual utility to fix value comparison: robust value matching using strict and deep object comparisons, improving reliability of selection/display. Commit: e980a724de58199c6facbcebb673772381ffe3a3. Major bugs fixed: - Fixed incorrect value selection/display in StyledDropdown by introducing areEqual with strict and deep object comparisons. Commit: e980a724de58199c6facbcebb673772381ffe3a3. Overall impact and accomplishments: - Increased test coverage for small-screen UI, improved CI reliability for visual regression tests, and faster feedback on UI changes. - Reduced manual QA load through automated visuals and more robust component behavior. Technologies/skills demonstrated: - Visual regression testing, CI workflow optimization, test configuration refactoring, and robust dropdown value handling via areEqual. - Effective traceability with commit references to feature and bugfix work.
June 2025
May 2025
1 Commits
May 1, 2025May 2025: Focused on stability and correctness of the Guitar Pro 7 RSE import flow in MuseScore. Completed a targeted revert of an incorrect fix, restoring the prior import behavior and removing the RSE-specific MIDI program mapping and related logic from GP7DomBuilder. This preserves existing user workflows and reduces instrument-path mapping errors for GP7 imports.
May 2025
1 Commits
May 1, 2025May 2025: Focused on stability and correctness of the Guitar Pro 7 RSE import flow in MuseScore. Completed a targeted revert of an incorrect fix, restoring the prior import behavior and removing the RSE-specific MIDI program mapping and related logic from GP7DomBuilder. This preserves existing user workflows and reduces instrument-path mapping errors for GP7 imports.
March 2025
1 Commits • 1 Features
Mar 1, 2025In March 2025, delivered a focused feature to improve Guitar Pro 7 imports by mapping Real Sound Engine (RSE) instrument sounds to MIDI program numbers in MuseScore, including refinements to instrument name derivation and how sounds are stored within tracks. This work reduces import errors, speeds up GP7 file handling, and strengthens cross-compatibility with industry-standard formats. The change was backed by the commit fix: gp7 rse import (#26956), addressing mis-mapped instruments and import reliability. Overall, this enhances the fidelity of imports, reduces post-processing needs, and improves user satisfaction for importing Guitar Pro 7 files.
1 Commits • 1 Features
Mar 1, 2025In March 2025, delivered a focused feature to improve Guitar Pro 7 imports by mapping Real Sound Engine (RSE) instrument sounds to MIDI program numbers in MuseScore, including refinements to instrument name derivation and how sounds are stored within tracks. This work reduces import errors, speeds up GP7 file handling, and strengthens cross-compatibility with industry-standard formats. The change was backed by the commit fix: gp7 rse import (#26956), addressing mis-mapped instruments and import reliability. Overall, this enhances the fidelity of imports, reduces post-processing needs, and improves user satisfaction for importing Guitar Pro 7 files.
March 2025
February 2025
1 Commits
Feb 1, 2025February 2025 — MuseScore (musescore/MuseScore) delivered targeted improvements to GP5 file import reliability, focusing on repeat counts and volta bracket handling. A critical bug fix for Guitar Pro 5 repeat count import was implemented, with an updated reference test to reflect corrected counts, reducing user-facing import errors and strengthening regression coverage.
February 2025
1 Commits
Feb 1, 2025February 2025 — MuseScore (musescore/MuseScore) delivered targeted improvements to GP5 file import reliability, focusing on repeat counts and volta bracket handling. A critical bug fix for Guitar Pro 5 repeat count import was implemented, with an updated reference test to reflect corrected counts, reducing user-facing import errors and strengthening regression coverage.
January 2025
1 Commits
Jan 1, 2025January 2025: Focused on stabilizing and extending Guitar Tab (GTP) import reliability in MuseScore. Delivered a targeted parsing fix to support 10-line staff layouts for steel guitar tablature, addressing a critical import edge case and improving compatibility with existing user content. The change reduces import errors, preserves data fidelity, and enhances the user workflow for composers and arrangers who rely on extended tablature formats.
1 Commits
Jan 1, 2025January 2025: Focused on stabilizing and extending Guitar Tab (GTP) import reliability in MuseScore. Delivered a targeted parsing fix to support 10-line staff layouts for steel guitar tablature, addressing a critical import edge case and improving compatibility with existing user content. The change reduces import errors, preserves data fidelity, and enhances the user workflow for composers and arrangers who rely on extended tablature formats.
January 2025
December 2024
1 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for musescore/MuseScore. Focused on expanding instrument coverage and import fidelity, specifically 9-string guitar support in Guitar Pro import. Delivered a new staff type and indexing adjustments to map lines to the correct staff type, increasing compatibility for extended-range guitars and widening the potential market.
December 2024
1 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for musescore/MuseScore. Focused on expanding instrument coverage and import fidelity, specifically 9-string guitar support in Guitar Pro import. Delivered a new staff type and indexing adjustments to map lines to the correct staff type, increasing compatibility for extended-range guitars and widening the potential market.
Activity
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Quality Metrics
Correctness90.6%
Maintainability85.4%
Architecture82.6%
Performance81.4%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++CMakeJavaScriptQMLShellXML
Technical Skills
Audio EngineeringBug FixingBuild SystemsC++C++ DevelopmentC++ developmentCI/CDConfiguration ManagementData MappingFile Import/ExportFrontend DevelopmentGit RevertGuitar Tablature SoftwareImport/Export FunctionalityMIDI
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