JoJo's Bizarre Adventure: All-Star Battle OST is the original soundtrack for JoJo's Bizarre Adventure: All-Star Battle. It was composed by Chikayo Fukuda and includes the themes for every playable character (aside from DLC), and the game's opening/ending themes.
Anasui's theme is "His name is Anasui", Emporio used the same line once to introduce Anasui to Foo Fighters.
Gyro's theme is "GO! GO! ZEPPELI!", the same epithet printed on his teeth.
Josuke (Jojolion)'s theme is "Then Can You Tell Me... Who Am I?", a line that Josuke said once and also the main goal to the character, to find who is he.
Baoh's theme is "Ultimate Weapon Baoh", since Baoh's story is around him being a lethal bioweapon.
Notes
○ means the DLC Character's theme was not included in CD, but still listed here.
Some of the character's BGM sounds like due to Araki's love for progressive music having an influence in him naming his characters and Stands from Part VI onwards.
Yoshikage Kira's theme features a similar riff to "Killer Queen" by Queen.