This is the site I use. They are not performed by the original artists but they are very well made. Go to the drum tab on top of page and search for something. Pretty good selection too. The cost per tune is $1.99 and you get the drum less track as well as full track or drum only as well as without vocal.
The arrangements for the most part stick to the original recording.
I use it in conjunction with my Yamaha EAD10 and it works great.