"青春ボカロ" (Seishun Vocalo / Vocalo Youth) is a GUMI and Lily only compilation album by avex. The theme of the album is youth, adolescence and various themes connected to it, like love, friendships, family, studying, hopes, dreams, club activities, sadness, having fun and so on. The album features several popular songs from well known producers such as Dios/Signal-P's "Aitai", Last Note.'s "Route Sphere" and takanon's "Nanka Renai", as well as "START" by Lefty Monster-P - the winner of Internet Co.'s 2012 GUMI and Lily song competition, and also a number of newly written songs. Tracks #1, #5, #6, #9, #10 and #15 are new.