I ii iii IV V vi vii
1 - 3 - 5 2 - 4 - 6 3 - 5 - 7 4 - 6 - 1 5 - 7 - 2 7 - 1 - 3 7 - 2 - 4
 
 
Were the controls clear enough?
Was the slider usable? Was it clear you can play the chor
(In this or other interactive tools)