Home / Forums / Buying a melodica / Yamaha P37D vs Suzuki M37 / Reply To: Yamaha P37D vs Suzuki M37 Reply To: Yamaha P37D vs Suzuki M37 August 19, 2017 at 5:01 pm #9172 Alan BrintonParticipant It is the same style of mouthpiece, what I call a duckbill mouthpiece. It is a bit more angular and not as smooth in its contours or as comfortable in the mouth. In my opinion, it is fine but inferior to the Yamaha mouthpiece. Hohner mouthpieces do not fit Yamahas. The difference in shape would be easy to tell with your fingers.