According to Discogs, Eric Frantzen Chor und Orchester performed all the BGM, and Orchester und Chor Christian Bruhn performed the title song in track 1. But I can't find any confirmation of that.
https://www.discogs.com/fr/Karel-Svo...elease/3207704
But that seems more logical to me than what writes on the album page on VGMdb currently, with Eric Frantzen Chor und Orchester which would have performed the main song.
About the titles in the field "Product", I put the English title first, then in brackets the German and Japanese titles, because it’s a German and Japanese (and also Austrian) co-production.