This riff can be played in practically all the positions of the harmonica so it can be played on many different key harps, but remeber it is in the key of B flat. On a B flat Harp (1st Position) -6 -6 -6 6 6 7 -6 -6 -6 -8 -8 7 7 On an E flat Harp (2nd Position) 5 5 5 -4 -4 6 5 5 5 -6 -6 6 6 On an A flat Harp (3rd Position) -7 -7 -7 -6 -6 -8 -7 -7 -7 8 8 -8 -8 On a F Harp (12th Position) -4 -4 -4 4 4 -5 -4 -4 -4 6 6 -5 -5