Is there any websites that anyone can go on and download backing tracks for songs from any bands?

Good question. I've been looking for the same myself.

Google it.

http://www.guitarbt.com/

wow this site is great...Now to find one with bass guitar backing tracks and that would be even better

Maybe something like this

http://www.jazzbacks.com/cgi-bin/online-st...amp;ref=bt-bass

Ah, I use that site all the time! They have some really nice ones there, and some that I'm surprised they even have! Not to mention it's free, which is always good in my book.

There's this topic in these forums where they mention a few interesting sites with backing tracks, many of them free.

Most of them are blues backing tracks.

I don't know if it's exactly what you are looking for, but you can take alook:

http://www.guitarmasterclass.net/guitar_fo...=backing+tracks

I just use all the GMC backing tracks when improvising! I just pick a lesson, open the backing and let rip !