Muse

μ's (pronounced "Muse") is a school idol group in the Love Live! School idol project anime. They're the school idol group of Otonokizaka High School. The group consists of nine members and was initially formed with the purpose of preventing their school from closing.

Songs
All of μ's songs and albums can be found here.

The songs they performed with and without full members in the anime, including the opening and ending songs, are:
 * Season 1
 * Bokura wa Ima no Naka de (OP)
 * Kitto Seishun ga Kikoeru (ED)
 * Susume→Tomorrow (Episode 1)
 * Aishiteru Banzai! (Episode 1)
 * START:DASH!! (Episode 2, 3, 13)
 * Korekara no Someday (Episode 6)
 * Bokura no LIVE Kimi to no LIFE (Episode 8)
 * Wonder zone (Episode 9)
 * No brand girls (Episode 10)
 * OVA
 * Music S.T.A.R.T!!
 * Season 2
 * Sore wa Bokutachi no Kiseki (OP)
 * Donna Toki mo Zutto (ED)
 * Koremade no Love Live! (Episode 1)
 * Susume→Tomorrow (Episode 1)
 * Yume no Tobira (Episode 3)
 * Love wing bell (Episode 5)
 * Dancing stars on me! (Episode 6)
 * Snow halation (Episode 9)
 * KiRa-KiRa Sensation! (Episode 12)
 * Bokura wa Ima no Naka de (Episode 12)
 * Aishiteru Banzai! (Episode 13)
 * Happy maker! (Episode 13)

Chronology
Season I = Season II =

Trivia

 * In reality, the group name "μ's" was decided through a cellphone poll by fans, one month after the release of their first single Bokura no LIVE, Kimi to no LIFE (僕らのLIVE,君とのLIFE) in August 2010.
 * In the anime, it is revealed that Nozomi decided the name of the group, naming it after the nine goddesses of music.
 * Despite the meaning of the group's name, μ's have performed four times without all nine members in the anime. For instance, μ's performed with only three members in S1 Episode 1 and S1 Episode 3, seven members in S1 Episode 6, and six members in S2 Episode 5.
 * Other polls also determined the names of the mini idol units: Printemps, BiBi, and Lily white.
 * Based on cellphone polls, the member with the most votes would be given the center position of the next music video. For example, Nico was the center of Natsuiro Egao de 1,2,Jump! (夏色えがおで1,2,Jump!) because she won a poll.
 * Polls also determine the idols' hairstyles and costumes for the music video.