The app is a combination of a music player and a recorder.

You can record your voice, or any other sound you hear in the current room, as long as it's in the same microphone and the audio is sampled at a rate of 44100 Hz.

The recorder can record as many tracks as you like, each with a separate volume and pitch.

You can use the built-in metronome to help you with your timing, and you can adjust the volume and pitch of each track.

You can record the audio directly to the app, or save it to a file.