Backing Track For Improvision

There must be loads of places to get them on the internet but just cant find anyhing anywhere. What i want is some chords in a certain key and maybe a drumbeat so i can improvise over it. It sounds much better improvising while accomponied with chords.

Thanks

Hey this is my favorite backing track sites i've found

http://www.freshbt.com/

It does not always give you a key. there are a mix of generic backing tracks and tracks form artists so you can learn the songs and solo.

Hope that helps

@tele,
That site seems awesome,
Thank you for sharing!