WebAudioFont is a browser-based sample synthesis library that plays musical instruments via the Web Audio API using SoundFont (.sf2) presets. It provides a high-level API for scheduling notes, chords, strums, and slides, with built-in effects including a 10-band equalizer, convolution reverb, and compressor. The library also includes a MIDI file parser/player and supports dynamic loading of instrument presets from an external repository. The architecture is a set of standalone TypeScript classes (Player, Loader, Channel, Reverberator, Ticker) that compile into a single browser global. While functional and feature-rich, the codebase shows signs of a personal project: no test suite, hardcoded external URLs, polling-based async loading, and some potential bugs (e.g., incorrect byte reading in MIDIFile.js). The library is GPL-3.0 licensed and has a large catalog of instruments hosted separately.