Songs
Opening theme
"Anything Goes!"
Lyrics: Shoko Fujibayashi
Composition: Tatsuo (of everset and Galveston 19)
Arrangement: Tatsuo & Kōtarō Nakagawa
Artist: Maki Ohguro (大黒 摩季, Ōguro Maki)
"Anything Goes!" was released on November 17, 2010, as a standard CD and a CD+DVD combo pack. The rapping on the song was performed by Rah-D, who provided his vocal talent in some of the show's background music.
A balladic version of the song titled "Anything Goes! Ballad" was played during the finale of Kamen Rider OOO. Ohguro stated that she thought that the song would also work as a slow ballad, especially after she has been watching how the series has progressed, and recorded the song during her hiatus from releases. The balladic version was released as a single on December 7, 2011.
Insert themes
Each of the series' various insert themes are titled in such a way to resemble the Kamen Rider OOO Combo that they serve as the theme for. The songs also feature Akira Kushida, the voice for the OOO Driver, chanting the name of the combo throughout the song. Ayano, a session guitarist for many of the recent Kamen Rider Series songs and member of the "Tsuyoshi & Ayano" group from the Kamen Rider W radio show, performs guitars on all of the tracks.
"Regret nothing ~Tighten Up~"
Lyrics: Shoko Fujibayashi
Composition & Arrangement: Shuhei Naruse
Artist: Eiji Hino (Shu Watanabe)
Episodes: 5, 7, 13
"Regret nothing ~Tighten Up~" was recorded throughout late September 2010 and recording completed on October 2, 2010. Shuhei Naruse was the song's producer and it was sung by Shu Watanabe under the name of his character Eiji Hino. It was first used in the October 3, 2010, episode. The pronunciation of "Tighten Up" is intended to mimic the pronunciation of "Tatoba". When played during scenes with other Combos, the "Tatoba" chant is removed from the song. The single for "Regret nothing ~Tighten Up~" features a ska arrangement by trombone player Eijiro Nakagawa.
"Got to keep it real"
Lyrics: Shoko Fujibayashi
Composition & Arrangement: Shuhei Naruse
Artist: Eiji Hino (Shu Watanabe)
Episodes: 6, 16, Movie War Core
The title of "Got to keep it real", Gatakiriba Combo's theme song, was revealed on Shu Watanabe's official blog on Gree.jp. The chorus features Sunaho of Labor Day. The single for "Got to keep it real" features a trance arrangement by Yoichi Sakai.
"Ride on Right time"
Lyrics: Shoko Fujibayashi
Composition & Arrangement: Shuhei Naruse
Artist: Eiji Hino (Shu Watanabe)
Episodes: 9–10, 15, 40, 42, 45
"Ride on Right time" is Latorartar Combo's theme song. The additional rap vocals are by Tsuyoshi Himura, the Tsuyoshi of "Tsuyoshi & Ayano". The single for "Ride on Right time" features a "mixture" arrangement by Shamo and Florida Keys member Junichi "Igao" Igarashi.
"Sun goes up"
Lyrics: Shoko Fujibayashi
Composition & Arrangement: Shuhei Naruse
Artist: Eiji Hino (Shu Watanabe)
Episodes: 12
"Sun goes up" is Sagohzo Combo's theme song. The chorus featured Mr. Rah-D.
"Time judged all"
Lyrics: Shoko Fujibayashi
Composition & Arrangement: Shuhei Naruse
Artist: Eiji Hino × Ankh (Shu Watanabe & Ryōsuke Miura)
Episodes: 20, 22–23, 25, 28, 48
On January 12, 2011, Shu Watanabe announced on his Gree blog that he was recording a new song for OOO, specifically for the "red bird guy" (赤い鳥のヤツ, akai tori no yatsu). The song has since been revealed to be titled "Time judged all", the theme for Tajadol Combo, and is a duet with Ryosuke Miura as Ankh. The song features Hyuga Rei and Mami Yanagi performing in the chorus, chanting in German. The "Full Combo Collection" album features a "dialogue" version as a bonus track.
"Shout out"
Lyrics: Shoko Fujibayashi
Composition & Arrangement: Shuhei Naruse
Artist: Eiji Hino (Shu Watanabe)
"Shout out" was first announced on April 17, 2011, by DJ HURRY KENN on the OOO Internet radio show, where he said the song for Shauta Combo would have a "Double-Action Rod form"-like feel, The song was played on the radio show, however it was never played in the series. Kaori Nagura of Kamen Rider Girls joins in the chorus.
"POWER to TEARER"
Lyrics: Shoko Fujibayashi
Composition & Arrangement: Shuhei Naruse
Artist: Eiji Hino (Shu Watanabe) & Akira Kushida
Episodes: 36, 44
"POWER to TEARER", the theme song for Putotyra Combo, is the first song that Akira Kushida was featured on the main vocals.
"Reverse/Re:birth"
Lyrics: Shoko Fujibayashi
Composition & Arrangement: tatsuo (everset)
Artist: Akira Date & Shintaro Goto (Hiroaki Iwanaga & Asaya Kimijima)
Episodes: 38, 46–47
"Reverse/Re:birth" is Kamen Rider Birth's theme song. The music video for the song features Hiroaki Iwanaga as Akira Date, Asaya Kimijima as Shintaro Goto, and Mayuko Arisue as Erika Satonaka.
Other
"Let's Go!! Rider Kick" (レッツゴー!!ライダーキック, Rettsu Gō!! Raidā Kikku)
Lyrics: Shotaro Ishinomori
Composition & Arrangement: Shunsuke Kikuchi
Artist: Kōichi Fuji
Episodes: 27
For the commemoration of the 1000th episode of the Kamen Rider Series, the original "Let's Go!! Rider Kick" was featured during the episode.
"WIND WAVE"
Lyrics: Tsuyoshi
Composition: Ayano
Artist: Tsuyoshi & Ayano
Episodes: 35
Tsuyoshi and Ayano of the Kamen Rider W Internet show Head Wind: One-Game Match!! have a cameo appearance as street musicians, Michibata Lion (路端ライオン, Michibata Raion), in episode 35 where they perform their radio show's theme song "WIND WAVE".
The first soundtrack for Kamen Rider OOO was released on November 17, 2010; it includes an edit of the series' opening theme "Anything Goes!". The second soundtrack was released on June 22, 2011. The Kamen Rider OOO: Full Combo Collection album was released on July 27, 2011, debuting at number 8 on its day of release on Oricon's daily album ranking.
DJ HURRY KENN announced on Twitter that Kamen Rider OOO's "final song" would be recorded on July 18, 2011.
