Looks like I introduced a bug (now fixed) in the public Composer when I put in sequence cloning yesterday. Anyway, if you dive in, a few quick things to remember:

• click anywhere on the fretboard to create a note; shift-click on an existing fretboard note to delete it

• use the arrow keys on your keyboard to move forward or rewind

• use the preview and play buttons to see how it looks and sounds

• for single note runs, check the 'Autostep' checkbox and it will advance you in the timeline each time you create a note

Thanks, but is it really difficult to learn

I might give it try to make a backing track for my harmonica practice... thanks.