Most of you probably know this, Love Live! School Idol Festival Smartphone Game. Yay!
Love Live! School Idol Festival is a social rhythm game for mobile devices (both for iOS and Android) produced by KLabGames and bushiroad. In the game, the player creates units based on collectible virtual cards and performs Live concerts with a designated unit. All the songs used in the game are sung by members of the Love Live! idol group μ’s. (Source: decaf.kouhi.me)