The song "Love Me Forever!", which plays during Remix 8 of the game, is sung by Japanese singer Ado and written especially for her by Tsunku. According to Tsunku, the idea of collaborating with Ado first came about after hearing her cover of the song "Mecha Mote I LOVE YOU". Tsunku spent nearly a year trying to come up with a song that was "quintessentially Rhythm Heaven and right for Ado to sing", before finally coming up with an idea after watching Ado perform live in Hawaii. Notably, if the player holds the A button at the start of Remix 8, the visuals will be changed into silhouettes in reference to Ado's concerts.