Home / Forums / General melodica discussion / Suzuki M 37C Voice Range / Reply To: Suzuki M 37C Voice Range Reply To: Suzuki M 37C Voice Range February 24, 2017 at 12:38 am #8292 Paul DurhamParticipant I had a chance to find the charts I told you about. The 32 note soprano is a whole 8va higher than a 32 note alto. But it haas only the half-octave higher than a 37. I hope this helps.