Gagaga

"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.

"Gagaga"
"Gagaga" performed by select senbatsu performers, consisting of:
 * First generation: Kazue Akita, Kana Ito, Haruka Umeda, Kazumi Urano, Megumi Ohori, Mami Kato, Haruka Kohara, Yukari Sato, Serina, Kayo Noro, Chen Qu
 * Second generation: Konan

"Kodoku na Runner"
"Kodoku na Runner" performed by all 39 members of SDN48.

"Eros no Trigger"
"Eros no Trigger" performed by select Undergirls A members, consisting of:
 * First generation: Misa Okochi, Megumi Imayoshi, Juri Kaida, Chisaki Hatakeyama, Hiromi Mitsui, Nachu, Reiko Nishikunihara
 * Second generation: Aimi Oyama, Yuki Kimoto, Yumi Fujikoso, Natsuko, Rumi Matsushima

"Sado e Wataru"
"Sado e Wataru" performed by select Undergirls B members, consisting of:
 * First generation: Sayaka Kondo, Masami Kouchi, Machiko Tezuka
 * Second generation: Yuki Aikawa, Akiko, Mana Ito, Yui Takahashi, Tomomi Tanisaki, Marina Tsuda, Akane Fukuda, Miyuu Hosoda, Yuka Ninomiya