Quetscher, Alan, this weekend I will check on the range between the Vibrandoneon (low register and high register) the Eolina and the Hammond 44. Based on the range below they should all be in the Tenor range
Piano-Vocal tenor range
Bass: C2-E4, Baritone: F2-G4, Tenor: B3-C5, Alto: E3-E5, Mezzo: G4-G6, Soprano: C4-C6
Melodica-Me