WAA!!!!

WAA!!!! is a song sung by Miku Hatsune and Rin Kagamine with Gumi Megpoid and IA Akasaka doing the chorus. It is the two-hundred-and-thirty-first track, the two-hundred-and-thirty-second track, the two-hundred-and-thirty-third track, and the two-hundred-and-thirty-fourth track in Other Vocaloid Songs 56: Making A Comeback Volume 4.