What is FourTracks?
FourTracks is a multi track recording studio that runs on Android. It’s great for musicians, singers and composers.
4 audio tracks, with volume knob and mute button. Marvelous viewer. Pinch to zoom, easy scrolling. Mix down WAV and OGG, share with friends. Many more features are in the pipeline
FourTracks Pro: CD quality recording, metronome and more, Import tracks (mp3 and wav)
The official website is no longer available. Last version, 1.10, released on October 2011, can be still downloaded from Google Play Store.