Home / Forums / General melodica discussion / Longer air tube for hohner airboard 37 / Reply To: Longer air tube for hohner airboard 37 Reply To: Longer air tube for hohner airboard 37 January 16, 2015 at 6:08 am #3774 Otis SpunkmeyerParticipant I would have to order off the internet unless something at home-depot would work for me. Are you plugging the tubing into the melodica or are you pushing it onto the end of the flexable mouthpiece?