Reply To: Tuning and Gapping Hammond Bass melodica
And I would add that lower notes bend easier than higher notes. If you play an octave and increase the air pressure gradually, you will hear the lower note start to go flat while the upper note remains pretty much in tune.
No matter how hard you blow, higher notes will barely move off of their tuning.
Practical translation: Bend notes when you are in the lower register; play chords in the middle register; use vibrato in the upper register.
Lowboy