Both discs I had in my library as they are. I did a search online for the discs and only came up with two track lists and KSLC that I used to check my own collection, but just as you mentioned, both name a different song lists for each disk. My SC8052 matches with the Karaoke Shack Song Book list, but according to KSLC, may actually be VPSC8052. The SC8051 matches with the KSLC but does not match with the Song Book. I think we need a scan of the actual discs, which I have been looking for.