Hey man here's a backing track I made. It's not too long, but hopefully it's fun to play over :)

Chords are:

Emaj G#7 Amaj Bmaj Cm7 F#maj Amaj Amin6

So it's 'mostly' in the key of E, except that G#7 and the Amin6. You can treat the Amin6 as a substitute for B7alt. It's a nice sort of cadence really.
It sounds hard but on the whole you can play the E major scale, with a few blues notes here and there.

~Julian

Here's the file itself:
Right Click and Save As...

Oh yeah.. and if you just left click on it, you should be able to get a preview of it play in your browser if you just wanted to hear Julian's work.