I am not using any real tracks.
I just put a wav file in and wanted to slow it up and play melodic chords to it with guitar. I listen to the original (although slow) track to get its "emotional feel" and play guitar lines that would work with this. I would then erase the warbly wav file and add a few more of my own tracks (or maybe realtracks). I also want to give the singer an idea of how it would sound slower with a different arrangement with a similar feel. I don't know if that make any sense but when I get ideas that I can't figure out, I will ask the forum.

Super K

Kristen of "Blues Matters"
http://www.motagator.net/bluesmatters