How do I find lower or higher notes than what I currently see?
You can find notes not immediately visible by swiping left to see higher notes or right to see lower notes. If Composer includes notes not in your present view, indicators on the sides of the screen will guide you to them.
I want to hear how my song sounds so far. How can I do that?
Tap on the "Play" button to play it back from wherever you are in the song.
Is there a quick way to get back to the beginning of my song?
If you have reached the end of your song, a jump-to-start button will appear in the bottom left where the play button used to be; tap on this to go back to the beginning of your song.