While I do know some great players who do indeed think that way, I'm guilty of leaning on some internal and innate ability to kind of automatically know the intervals from the sound of them.

Certainly not a sudden gift, I think it comes about by the repetition of practice, study and the familiarization that breeds contempt.

That said, I do use the numbers quite a lot. That too, is rather interchangeable in my mind at this point, after all these years it matters not whether I'm thinking say, the V of the key of Eb, or just thinking Bb.

Practicing all songs in all keys is the beginning of becoming a consummate Bebop and Modern Jazz musician.


--Mac