Home / Forums / Buying a melodica / Yamaha P37D vs Suzuki M37 / Reply To: Yamaha P37D vs Suzuki M37 Reply To: Yamaha P37D vs Suzuki M37 February 7, 2016 at 1:03 am #6797 Alan BrintonParticipant In current models, the extra notes are added at the top end. I prefer 32 key models because of compactness and how the melodica balances in my left hand. I don’t use the hand strap.