User blog comment:Plantmageskelly/Asterhythm Vocal Group/@comment-25175334-20140518234945/@comment-2121396-20140519103553

The physical copy has stuff for synth engines other than UTAU (like GarageBand, Kontackt, Reason4, Etc)

The UTAU versions are free C: In fact, one of them (Krios) is released .w.