Thanks, Mr! For GT-23, however, I doubt it's the same as GT-8, even though both albums have a similar title. Plus, I've already downloaded GT-8 for the sake of identifying stock music tracks for "The Ren and Stimpy Show". I know that GT-23 exists because there was a site called "brunhoever-lg.de", but that site has long since been shut down. Plus, there were also some "Musik-Atlas" albums that contained songs that were also reissued in various national Selected Sound albums (i.e., "Japan", "China-Afghanistan-Tibet").
