What I do is simply subtract seven every time I see anything over a 9th. So, for instance, when playing in the Key of G and a 13th comes up, I subtract 7 and come up with the 6th or "E". *** Mike > On Apr 7, 2016, at 11:19 AM, Tin Lizzie <TrackHarpL@xxxxxxxxxxxx> wrote: > > 6th