> Less than 66 keys is like playing a 2-string guitar. I've found I need an odd number of octaves. Even number of octaves is kind of useless. The songs I can

> Less than 66 keys is like playing a 2-string guitar. I've found I need an odd number of octaves. Even number of octaves is kind of useless. The songs I can play on a 3 or 4 octave device are the same, but 5 octaves opens up more. I bought a 49 key controller and had to send it back.