"Ranbu no Melody" (乱舞のメロディ) is a single by Japanese rock band Sid, released on December 1, 2010, by Ki/oon Records.

Opening theme of Bleach anime, it also figured on the television shows a-ha-N and Be-Bop!

[2] In May, it was announced that SID's new single "Ranbu no Melody" would be chosen as opening theme of Bleach.

[4] Before being officially released on CD, the song debuted on DAM karaoke with a freebie for those who downloaded it.

[5][6] CD Journal website described the song as rock with aggressive guitar and drums and a high beat.