The Hayden Layout, Fingering Patterns And Reading Music in General Concertina Discussion Posted January 30, 2018 Don, I'm glad you brought this up. I'm a late student of music, trying to learn to read music and figure out the Hayden at the same time. The issue of having to learn 4 new fingerings just to move the key up a fifth when the Hayden is supposed to be so easy, seems so hard. I thought it was me. Focusing on intervals rather than note names seems to help.