「READY STEADY GO – L’Arc~en~Ciel」Wiki
"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 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 version) opening song to the Fullmetal Alchemist anime. It was featured as a song in the Japan-exclusive Nintendo DS launch music video game, Daigasso! Band Brothers. It was featured in the Japan-exclusive 2005 iNiS music video game Osu! Tatakae! Ouendan as the last stage.
(Wikipedia contributors. "Ready Steady Go (L'Arc-en-Ciel song)." Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, 30 Nov. 2013. Web. 8 May. 2014.)