Home / Forums / Buying a melodica / Yamaha Pianica P-37E – My Report / Reply To: Yamaha Pianica P-37E – My Report Reply To: Yamaha Pianica P-37E – My Report November 19, 2018 at 9:47 am #10498 DarenKeymaster I don’t have an instrument to hand right now, but I have noticed a slight curve in melodicas before.While this could potentially affect the mechanics, I’m not sure how it would influence the pitch, as this is set by the individual reeds?