GoKawiilOnKey launches as free, open-source Mac app for pitch-matched singing practice
A developer has released OnKey, a free and open-source singing trainer for Apple Silicon Macs. The app listens to songs played through Spotify, Apple Music or YouTube, learns the vocal melody after one playthrough using a vocal-separation model, CREPE pitch tracking and a note model, then displays scrolling notes with the user's pitch overlaid and a line-by-line score on repeat plays. It requires microphone and system audio access, does not store or stream music itself, and uses Shazam and LRCLIB lookups only to identify songs and fetch lyrics.