"Ready Steady Go" is the twenty-third single by L'Arc-en-Ciel, released on February 4, 2004 it reached number 1 on the Oricon

Oricon

, established in 1999, is the holding company at the head of a Japanese corporate group that supplies statistics and information on music and the music industry in Japan. It started as , which was founded by Sōkō Koike in November 1967 and became known for its music charts. Oricon Inc...

 chart. The four alternate versions on the single omit each titular band member's contributions; for instance, the "Hydeless Version" features none of hyde's vocals (but still contains the backing vocals), while the "Yukihiroless Version" has no percussion whatsoever.

"Ready Steady Go" was used as the second (first in the U.S. Adult Swim

Adult Swim

Adult Swim is an adult-oriented Cable network that shares channel space with Cartoon Network from 9:00 pm until 6:00 am ET/PT in the United States, and broadcasts in countries such as Australia and New Zealand...

 version) opening song to the Fullmetal Alchemist

Fullmetal Alchemist

, is a Japanese manga series written and illustrated by Hiromu Arakawa. The world of Fullmetal Alchemist is styled after the European Industrial Revolution...

anime. It was featured as a song in the Japan-exclusive Nintendo DS

Nintendo DS

The is a portable game console produced by Nintendo, first released on November 21, 2004. A distinctive feature of the system is the presence of two separate LCD screens, the lower of which is a touchscreen, encompassed within a clamshell design, similar to the Game Boy Advance SP...

 launch music video game

Music video game

A music video game, also commonly known as a music game, is a video game where the gameplay is meaningfully and often almost entirely oriented around the player's interactions with a musical score or individual songs...

, Daigasso! Band Brothers

Daigasso! Band Brothers

is a music video game published and developed by Nintendo for the Nintendo DS handheld game console. It was released in Japan on December 2, 2004 as a launch game for the Nintendo DS. The game features multiple songs, which include classical music, television themes, and video game music. The game...

. It was featured in the Japan-exclusive 2005 iNiS

INiS

is a Japanese video game developer that specializes in rhythm games. It was co-founded by Keiichi Yano on February 3, 1997. The name iNiS is an acronym and it stands for "infinite Noise of the inner Soul."-Games developed:-Engines:...

 music video game Osu! Tatakae! Ouendan

Osu! Tatakae! Ouendan

, sometimes referred to as simply Ouendan, is a rhythm video game developed by iNiS and published by Nintendo for the Nintendo DS handheld game console in 2005, for release only in Japan...

as the last stage.

Track listing

#	Title	Lyrics	Music
1	"Ready Steady Go"	Hyde	Tetsu
2	"Ready Steady Go (Hydeless Version)"	‐	Tetsu
3	"Ready Steady Go (Kenless Version)"	Hyde	Tetsu
4	"Ready Steady Go (Tetsuless Version)"	Hyde	‐
5	"Ready Steady Go (Yukihiroless Version)"	Hyde	Tetsu