ABC notation is a shorthand form of musical notation.
The GNU General Public License (GNU GPL or GPL) is a widely used free software license, which guarantees end users the freedom to run, study, share and modify the software.
macOS (previously and later) is a series of graphical operating systems developed and marketed by Apple Inc. since 2001.
Microsoft Windows is a group of several graphical operating system families, all of which are developed, marketed, and sold by Microsoft.
The open-source model is a decentralized software-development model that encourages open collaboration.
Python is an interpreted high-level programming language for general-purpose programming.
A software synthesizer, also known as a softsynth, is a computer program, or plug-in that generates digital audio, usually for music.
A Unix-like (sometimes referred to as UN*X or *nix) operating system is one that behaves in a manner similar to a Unix system, while not necessarily conforming to or being certified to any version of the Single UNIX Specification.
Waveform Audio File Format (WAVE, or more commonly known as WAV due to its filename extension - both pronounced "wave") (rarely, Audio for Windows) is a Microsoft and IBM audio file format standard for storing an audio bitstream on PCs.