"Gagaga" (stylized in all caps) is the debut single of Japanese idol group SDN48.

Written by Yasushi Akimoto and composed by Haranhn, it was released on November 24, 2010, by Universal Music Japan.

The single was simultaneously released in South Korea, where SDN48 performed "Gagaga" on Mnet's M Countdown.

[1] All lyrics are written by Yasushi Akimoto, with the exception of off vocal version tracks.All lyrics are written by Yasushi Akimoto, with the exception of off vocal version tracks.All lyrics are written by Yasushi Akimoto.

"Eros no Trigger" performed by select Undergirls A members, consisting of: "Sado e Wataru" performed by select Undergirls B members, consisting of: