It's not exactly what you need, but the guitarbackingtrack.com site has a lot of mp3s of songs without certain parts. They're usually bass, drums, and rhythm for a lead guitarist to play to but sometimes they have different parts taken out. There are some with vocals too.
Working on (As of June 2023):
Dokken, Whitesnake, You (practice CDLCs), TNT, Crazy Lixx, Chrissy Steele
Future possibilities:
Jeff Scott Soto (one of these days!)
First Signal
Shotgun Messiah
Done Recently:
A bunch
Maintenance:
(Message me if something needs my attention)