Home / Forums / Melodica construction, repair and maintenance / Tuning and Gapping Hammond Bass melodica / Reply To: Tuning and Gapping Hammond Bass melodica Reply To: Tuning and Gapping Hammond Bass melodica February 5, 2015 at 7:40 pm #4040 Tom TeasleyParticipant Great stuff MM. I hope to meet you sometime if I’m on tour in Calif or you are in the D.C area. I’ll re-read this often! Thanks again, Tom