Music of Kamen Rider Den-O

 is the seventeenth installment in the popular Kamen Rider Series of tokusatsu programs. As part of the series, several musical releases through Avex Mode were made for the series opening themes, ending themes, image songs, and original soundtracks. Most songs are rearrangements of the initial opening and ending themes.
Climax Jump.
"Climax Jump" (released March 21, 2007) was performed by AAA under the name "AAA DEN-O form". The other "edits" of "Climax Jump" that were released on the single were used as background music for the series. It debuted at #5 on the Oricon weekly charts, becoming the first of AAA's singles to reach the top five of the charts. It was also certified by the Recording Industry Association of Japan as a Gold Record in March 2008, one year after the release.
For the introduction of Climax Form in episode 28, "Climax Jump" was used as the ending theme. In the finale, the instrumental version of "Climax Jump" was used as a true ending theme, playing over the end credits, instead of over the battle.
"Climax Jump" was later released on the "Kamen Rider Decade" album "Masked Rider series Theme song Re-Product CD SONG ATTACK RIDE Third featuring DEN-O KABUTO HIBIKI", where it was rearranged by both RIDER CHIPS and Shuhei Naruse.
HIPHOP ver..
This version of "Climax Jump" plays when Ryutaros takes over Ryotaro and he is accompanied by his "dancers" until "Double-Action Gun form" was recorded and used in its place in episode 21. It was played in the movie when R-Ryotaro arrived at the Climax Scene.
DEN-LINER form.
"Climax Jump DEN-LINER form" (released December 19, 2007) is an arrangement of "Climax Jump" that has Momotaros, Urataros, Kintaros, and Ryutaros singing. It was used as the opening theme song starting on episode 40. The single for the song had four different CD jackets for each of the four Tarōs. This designated what bonus track (a remix of "Climax Jump" named after the Imagin's catchphrase) would be found on the disc (the "Ore, Sanjō!" remix, the "Tsuraretemiru?" remix, the "Nakerude" remix, and the "Kotae wa Kiitenai!" remix).
In its first week, the "Climax Jump DEN-LINER form" single sold 66,000 records, reaching #2 on the Oricon Styles weekly album rankings, higher than any previous "Kamen Rider Series" single. It reached #62 on 2008 Yearly singles Oricon chart. It also was certified as a Gold Record by the RIAJ.
Dark HIPHOP ver..
This version of "Climax Jump" plays when Kai arrives and takes control of people.
pop'n form.
An arrangement of "Climax Jump" entitled "Climax Jump pop'n form" appears in the arcade game "pop'n music 16 PARTY♪" and is performed entirely by Shuhei Naruse.
Climax Jump the Final.
"Climax Jump the Final" is a new arrangement of "Climax Jump" recorded for "". It was included on the album "Ī jan! Ī jan! Sugē jan!?".
Cho Climax Jump.
 is a new arrangement of "Climax Jump" recorded for "", released on April 22, 2009.
Climax Jump for U.
"Climax Jump for U" is the latest rearrangement of "Climax Jump" that was performed on the Imagin stage tour "Imagin Super Climax Tour 2010". The song is to first be included on a series of CDs released with purchases of tickets of the show as a "Sampler Size edit" coupled with one of the four main "Double-Action" variations, with its full size version and seven variations included on the "Cho CD-Box".
Double-Action.
The "Double-Action" line of songs are (initially) a series of duets sung by Ryotaro Nogami and his Imagin partners (actor Takeru Satoh and the voice actor for the Imagin) and are used as the ending theme or the song played in the background of climactic scenes whenever that Imagin's form of Den-O is used. Every CD that a "Double-Action" song is released on also features a version of the song with sound bites of the character's dialogue throughout the song.
Sword form.
"Double-Action Sword form" features the Imagin Momotaros (Toshihiko Seki) as Ryotaro's singing partner and is sung in a Eurobeat style.
Rod form.
"Double-Action Rod form" features the Imagin Urataros (Kōji Yusa) as Ryotaro's singing partner and has a ska beat.
Ax form.
"Double-Action Ax form" features the Imagin Kintaros (Masaki Terasoma) in the duet singing in an enka style.
Gun form.
"Double-Action Gun form" replaces "Climax Jump HIPHOP ver." as the song that plays whenever Ryutaros (Kenichi Suzumura) is in control of Ryotaro and sings in the duet with him. It is sung in a hip hop style.
Wing form.
"Double-Action Wing form" was featured in the finale episode and has an Arabic pop style. During the ending credits of the finale, the song was accidentally titled "Climax Jump Wing form". Toei later released a statement correcting this error in the "Den-O" production blog and that a single for "Double-Action Wing form" would be released on March 26, 2008. On its first day on the market, the single for "Double-Action Wing form" started out at #2 on the Oricon. It ended its first week at #5 on the Oricon's weekly charts. "Double-Action Wing form" later was used in the Final Cut Version of "Kamen Rider Den-O: I'm Born!", the DVD of which also included a CD with the song and a version of the song featuring Sieg's dialogue from the movie.
Piano form.
"Double-Action Piano form (1-4)" is an instrumental version of "Double-Action" played on a grand piano as part of the storyline to episodes 33 and 34. The various versions of "Double-Action Piano form" were released on the "Real-Action" and "Double-Action Coffee form" singles.
Coffee form.
"Double-Action Coffee form" is the first "Double-Action" arrangement that is not used as an ending theme, but as an insert song, as both characters who sing the song are non-combatants. This song and "Real-Action" were released as singles on September 26, 2007. As a version of "Double-Action", it has a J-pop style.
GAOH form.
"Double-Action GAOH form" is an arrangement of "Double-Action" that is the only solo act with a deathrock feel that was released on the original soundtrack for "", but was not used in the theatrical release of the film. It was later used on the DVD release's Final Cut Version and used as an "ending theme" for Kamen Rider Gaoh.
CLIMAX form.
"Double-Action CLIMAX form" is an arrangement of "Double-Action" that is the only quintet vocalist arrangement. Its single was released on April 16, 2008. Shuhei Naruse arranged and composed the song. Like "Climax Jump DEN-LINER form", the single has variant covers which designate its bonus track (the song's rap being sung by the Imagin on the cover). These singles also include a DVD of the music video. A sixth single has all five Imagin on the cover, but does not have a bonus track nor a DVD. On its first day of release, the singles reached #3 on the Oricon Daily charts. It ended its first week on the Oricon at #4 on the Weekly Single Charts.
Strike form.
"Double-Action Strike form" is a rock arrangement of "Double-Action" that serves as the theme song for Kamen Rider New Den-O. Its premiere is in the film "".
Other songs.
In addition to the "Climax Jump" and "Double-Action" remixes, there were several songs released that were original compositions for "Den-O".
Action-ZERO.
"Action-ZERO" has a heavy metal style. It is the first ending theme that is not a "Double-Action" arrangement. However, it is still a duet between Yuto Sakurai and Deneb, and is used as the theme song for Kamen Rider Zeronos. A piano arrangement titled "Action-ZERO Piano form" was included as a B-side on the "Double-Action Wing form" single.
2010.
"Action-ZERO 2010" is a balladic arrangement of "Action-ZERO" that is used as the theme song for the film "". The single includes solo renditions by Yuichi Nakamura as Yuto Sakurai and Hōchū Ōtsuka as Deneb.
Yume de Aeta nara....
 is the second song for "Den-O" that was commissioned by an artist who was not a member of the series' cast. The song by 175R was used as the theme song for the film "".
Real-Action.
"Real-Action" has a rock style. It is the second ending theme that is not a "Double-Action" arrangement and is used as an ending theme for Kamen Rider Den-O Liner Form (the only form that Ryotaro fights by himself).
Den-O vocal tracks liner.
"DEN-O VOCAL TRACKS LINER (C-J D-A nonstop re-connection)" appeared on the second original soundtrack as a of the songs performed by the cast at the time of its release. It features remixes of "Double-Action", "Double-Action Rod form", "Double-Action Ax form", "Double-Action Gun form", "Double-Action Coffee form", "Double-Action GAOH form", "Action-ZERO", "Real-Action", and "Climax Jump DEN-LINER form".
Climax-Action.
 is a new song to serve as the theme for "". The song is a medley of all of the "Climax Jump", the "Double-Action" songs (without "CLIMAX form" or "Strike form"), and "Action-ZERO"; sung portions of "GAOH form" and "Real-Action" are omitted, but instrumental portions from their songs are included. The B-side for its CD single is Kamen Rider Diend's theme: "Treasure Sniper" by Daiki Kaito (Kimito Totani). This medley is sung in an orchestra.
Albums.
Several albums were released for "Kamen Rider Den-O", mostly original soundtracks for the series and films.
"Original Soundtrack".
The was released on June 27, 2007, and features the musical score for the first half of the series, "Climax Jump HIPHOP ver.", and TV size versions of "Climax Jump" and all four "Double-Action" renditions featured in the series up to the album's release.
"Perfect-Action ~Double-Action Complete Collection~".
Perfect-Action ~Double-Action Complete Collection~ (released on August 1, 2007) features "Double-Action", "Rod form", "Ax form", "Gun form", versions containing dialogue for all characters (including a new version for "Double-Action"), instrumentals for all four tracks, and the bonus track "Double-Action Bonus form" which is a short version of "Double-Action" with original dialogue for all four Imagin.
"I'm Born! Original Soundtrack".
The was released on October 24, 2007, and features "Double-Action GAOH form" and its dialogue version as part of the film's soundtrack.
"Original Soundtrack Vol.2".
The was released on December 19, 2007, and features "DEN-O VOCAL TRACKS LINER (C-J D-A nonstop re-connection)" as a track as well as the soundtrack for the latter half of the series.
"Complete CD Box".
The was a box set released on January 16, 2008, that featured every song released for "Kamen Rider Den-O" up until that date, a total of 120 tracks. The box set includes "Climax Jump Dark HIPHOP ver.", the instrumental for "Double-Action GAOH form", and a series of soundbyte versions of the four primary "Double-Action" variations initially released as ringtones.
"Imagin Absurd Card Game".
 was a drama CD released on January 24, 2008, with artwork in the style of the "Imagin Anime" DVDs.
"Play with the Imagin!".
 is another drama CD that has the listener play games with the Imagin.
"Ī jan! Ī jan! Sugē jan!?".
 is an album, released on October 1, 2008, that features the release of "Climax Jump the Final", as well as rearrangements of "Climax Jump" titled "Climax Jump Sword form", "Climax Jump Rod form", "Climax Jump Ax form", "Climax Jump Gun form" (all of which also had dialogue versions), and "Climax Jump Piano form". Two versions of the album were released, one of which had a DVD with music videos for all of the "form" variations of "Climax Jump" included on the album.
"Radi-Taros".
The Internet radio albums featured recordings of "web radio" shows hosted by the cast. Two CDs were released on November 12, 2008, under this title.
"Final Countdown Original Soundtrack".
The was released on November 26, 2008, and featured "Climax Jump the Final" and the score for the film.
"The Onigashima Warship Original Soundtrack".
The was released on October 21, 2009, and features the score for the film and "Cho Climax Jump".
"Cho-Den-O Trilogy Original Soundtrack".
The is to be released on May 26, 2010, and features the score for all three films in the "" series.
"Cho CD-Box".
The was released on July 28, 2010. It consists of 20 CDs and 2 DVDs, containing a total of 350 songs, one of which is the new song "Climax Jump for U".