Good backing tracks?

[elenore19]

I really want to practice improvisation on guitar, and I figure the easiest way to do that would be to get some backing tracks to solo over.

Anyone know of any good places to get some backing tracks?
In terms of type of music; bluesy.

Thanks!

 

[rayc]

Download karaoke.

 

[punkin]

http://www.guitarbt.com/index.php