GitHub - thelowsunoverthemoon/mahler.c: Western music theory library in C
Hacker News
February 19, 2026
AI-Generated Deep Dive Summary
GitHub introduces *mahler.c*, a lightweight C99 library designed for Western music theory calculations. This innovative tool simplifies complex musical concepts like intervals, chords, scales, and key signatures through easy-to-use functions. Unlike other libraries, *mahler.c* avoids internal memory allocation, supports theoretical keys (e.g., F♭+), and handles accidentals without limits (e.g., G 20th sharp). Its enharmonic correctness ensures accurate musical representation—such as recognizing the minor 6th of D as B♭ instead of A♯. With 100% test coverage, *mahler.c* is a reliable solution for developers working on audio processing, music applications, or algorithmic composition.
The library’s name pays homage to Gustav Mahler, a composer known for blending emotional depth with modernist innovation. Inspired by his work, *mahler.c* aims to bridge programming and music theory by providing precise calculations for notes, intervals, and harmonies. The example code demonstrates how users can create scales like the C4 Blues Scale or print individual notes in enharmonic form. Developers can integrate *
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Originally published on Hacker News on 2/19/2026