So happens there's a lot of shared songwriter credits between 5 of the 6 songs. And one of the performers though he didn't write his own song cowrote one of the others.

Funny thing about that. These days anime and American cartoons are often animated by the same studios. Well, that's been true for years, with Toei animating the pilot for TMNT87, TMS animating a bunch of Batman TAS and several classic Disney TV cartoons (DuckTales, Chip-n-Dale, New Winnie the Pooh), and DR Movie…

Didn't he animate that one film completely by himself? Voices from a Distant Star or something?