Home / Forums / Melodica construction, repair and maintenance / Pitch and temperament / Reply To: Pitch and temperament Reply To: Pitch and temperament July 13, 2014 at 4:45 pm #2769 WeiyanParticipant Thank you. I never regard M-37 as a toy. I am teasing the ignorance music professional here. I am waiting the harmonica tool kit from Amazon. If the piano is not tuned, its not music instrument, so the Melodica.