|Song by Wake Up, Girls!|
Tachiagare! is the first song performed by Wake Up, Girls!. Originally performed by six members, the song is later expanded to seven when Mayu Shimada joins the group.
The song is performed at the end of Shichi-nin no Idol and plays over the ending credits. It later makes appearances in the anime and Seishun no Kage as an insert song.
It is used as the opening theme for the 1st two episodes of the anime though it is replaced by 7 Girls War on the Blu-Ray and DVD releases.
Tachiagare! appears as a Bonus CD on the Shichi-nin no Idol Blu-Ray. It also appears on the album Wake Up, Best!.
The 6-girl version appears on the Limited Theater Edition of Shichi-nin no Idol.