"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.

Adult Swim broadcast) opening song to the first Fullmetal Alchemist anime series.

[2] It was featured as a song in the Japan-exclusive Nintendo DS launch music video game, Daigasso!

Band Brothers, along with the Japan-exclusive 2005 iNiS music video game Osu!

American punk rock band Zebrahead loosely translated and covered the song, which features on a tribute album to L'Arc-en-Ciel.