No, not cheating. I play [jazz] piano, so I'm used to hearing intervals and stuff (Useful when comping for solos). So I visualize it like this: Lower tone:

No, not cheating. I play [jazz] piano, so I'm used to hearing intervals and stuff (Useful when comping for solos). So I visualize it like this: Lower tone: Eb, F, or G Upper tone: C, D, or E So as the note's played, I tried to visualize what keys I'd have to hit on the piano to make the same noise. Also, i put the phone on speakerphone so that I can look at the digits while they play back. The middle combinations are the toughest, because if you don't have a good bearing on where the previous pitch is, it's easy to get disoriented.