Honestly, we could just say "The entire soundtrack", but that wouldn't be giving credit where it's due. All but one track is done by No More Heroes and Danganronpa composer Masafumi Takada while "Devil May Sly" is done by Grasshopper Manufacture composer Jun Fukuda.
- "Be ready for it!"
, the title screen theme, actually sounds suspiciously like a battle theme despite the shonen anime influence, and sure enough, is the boss theme of Double God Hand Gene. - "Gene's Rock-a-bye", the Stage 1 theme as well as the main theme in general, will stay with you for the entire game, as it also plays in the results screen and fits with the initial "western" theme of the first few levels. "Broncobuster", a sped-up version of "Gene's Rock-a-bye", plays when Gene unleashes the God Hand.
- "Smoking Roll", Elvis' first battle theme. Who knew funk music would go so well with this Noble Demon? "Smoke Out", Elvis' second battle theme, keeps the funky vocals of "Smoking Roll" but replaces the instrumentation to highlight his terrifying new form that manages to keep his base form's personality.
- "Come from Dark", the theme of the Specters. A violin combined with a mysteriously hypnotic bassline used for demons makes about as much sense as the entirety of God Hand, but it still works regardless.
- "Dark Matter", Great Specter's boss theme. Look up "music to get your butt kicked to" and you'll likely find this song.
- "Sunset Heroes", for the craziest five-member hero squad you can find, the Mad Midget Five. Definitely carries that comedic superhero aesthetic one can ask for.
- "Water Line", for the Stage 5 boat minigame, would actually fit in a game like Space Invaders, which ironically had no music in it.
- "Rainy Rose", Shannon's high-energy first battle theme. While it's hard not to dance to this, "Posion Queen", her second battle theme, is even faster than the last one, and the vocals call Shannon's... personality to mind.
- "Floating Fort", the Stage 4 theme. It's the home of many lasts; The Three Evil Stooges' last appearance, Azel's last appearance before fighting him, and... the first time you fight Dr. Ion.
- "Nippy Dog", Ravel and Debussy and Aniki's theme, is a compliment to their choice of profession.
- "Handsome Dynamite", Tiger Joe's theme. EDM in a PS2 game? It's more likely than you think.
- "Forgotten Song", Stage 7's theme, continues a trend of desert music being really catchy.
- "Higher Than Heaven", Stage 8's theme, continues to uphold the "Final dungeons must have good music" trend.
- "Devil May Sly", Azel's first battle theme. Perfectly encapsulates a serious rival fight that conflicts with the rest of the game's largely comedic tone. Also the only song in the game not composed by Takada.
- "Anthem of Angra/SATAN", Angra/SATAN's battle theme. Punching a literal face to death has never sounded so good.
- And to cap this amazing song list off, "GOD HAND", the game's credits Image Song, showcases Gene's Power of the God Hand abilities in grandiose detail.
