Metronaut: Music Sheets

知音律, also known as Metronaut: Music Sheets, is a revolutionary practice app that lets you perform any instrument – or your voice – with a real orchestra in your living room. It listens in real time and adapts accompaniment to your tempo, rhythm, and performance, so you can explore interpretation freely at any skill level.

Key features include high-quality professional accompanists, tempo adjustments without sacrificing sound, a digital score with scrolling and flexible starting points, and easy transposition for different instruments or vocal ranges. It also provides loop practice, instrument tuning, score annotations, and performance recording and playback. The community catalog grows with user submissions, upvotes, and shared performances.