in the center of the screen, there are 12 strings. You can adjust their sizes their directions, or move them where you want.
Then you select one of the instruments. 3 sounds. You can replace a sound by a little sample that you will record with the microphone of your iDevice.
Then, you draw. 5 little melodies per instrument track. The way you are going to draw (from left to right, from top to bottom, will determine the reading direction, the timing too. Move the strings to play or not a note, to play chords,....
In the settings more options,... Sync the the drawings, lock bows, and the export mode: Audiocopy or iTunes files sharing.
This App is really cool, but not really for Pro musicians. No Audiobus or IAA implementation despite this, they can have fun with it.
A very Good App!
Review by Ed