Home / Forums / Melodica construction, repair and maintenance / Yamaha P37D, muffled sounds due to clogged spit / Reply To: Yamaha P37D, muffled sounds due to clogged spit Reply To: Yamaha P37D, muffled sounds due to clogged spit March 23, 2018 at 4:04 am #9776 YanParticipant Thank you for all the advice! Would definitely try to incorporate them 🙂