Home / Forums / General melodica discussion / Hohner history / Reply To: Hohner history Reply To: Hohner history February 23, 2015 at 9:58 pm #4208 Alan BrintonParticipant Early vertical Piano 27 was out by 1963, as both the 26 and 27 were featured in a Marvin Kahn School Repertoire Series book published in 1963.