I have a fake book in C called "The Standard real book"

If i take for instance "Ain't no sunshine" and I play the notes on the sax, how do I enter my chords in BIAB.

Do have have to transpose them from one key to another or do I just transpose them down by one tone.

or will it sound bad no matter what because I am playing the notes in the wrong key.



and if I get a fake book in Bb, do I still have to transpose the chords for my backing tracks or do I enter them as is.



Sorry for my ignorance , but I find this a little confusing.

I play the piano and the guitar, but the sax is new to me and I want to be able to create backing tracks for when I play.


Ron

Thks for all the help