Worked on the csound/csound repository to enhance stability and correctness in audio synthesis workflows by addressing a critical bug in opcode processing. Focused on refining how the 's' opcode interacts with p-fields, the solution involved implementing conditional output formatting to distinguish between real-time and score events. This approach, developed in C, ensures that event processing no longer results in aborts, thereby improving both live performance reliability and scripted playback accuracy. The work required careful debugging and a deep understanding of event handling within the codebase, ultimately reducing runtime errors and simplifying future maintenance for audio synthesis applications.