The soundtrack for the 12-part OVA, called \"The Guyver Special\", contained 31 tracks on 2 discs, including the long versions of the openings for both Act 1 and Act 2 on their respective disc. Also included was a mini datafile booklet, with illustrations and some brief information on the Guyver and several Zoanoids from early on in the seies.
The second OVA series half Main Theme was composed by Eiji Kawamura, who also did the entire Soundtrack for Hades Project Zeorymer(Meiô Keikaku Zeorymer). He worked on a few Kamen Rider Series and Black Jack. The soundtrack itself was mainly composed by Reijiro Koroku, who is more famous for his work on Ideon Anime Series and the Godzilla movies.
