Strawberry Music Player
A fluidsynth Qt GUI Interface
Meson Player is an (almost) invisible music player
Music score editor
Kreogit Mu is a cross-platform music management app.
An iOS and macOS audio visualization framework
Sample Level Modulation of Musical Timeline
Very Powerfull Crossplatform Qt Based Music Note Editor[Still Planing]
Library to perform read/write of ID3 tags in MP3 files