Here's a music thread regarding two different franchises Yuzo Koshiro had composed music for: they are Legacy of the Wizard (or Drasle Family if you don't speak English) and Streets of Rage (all three titles).

I'm also composing this post in order to find out: which musical similarities from Koshiro's older works were evident in his newer works? For example, do any riffs from songs heard in LotW (the themes of Xemn, Meyna, Lyll, Pochi, etc.) had found themselves into any BGM within any of the compositions from any of the three Streets of Rage titles (like "Dreamer" from SoR2)?