Koi No Shigunaru Rin rin rin! (恋のシグナルRin rin rin! lit. Love's Signal Rin Rin Rin!?) is a single sung by Hoshizora Rin. The song is also included in μ's Best Album Best Live! Collection. The song is written by Hata Aki, composed by Suda Shingo, and arranged by Andō Takahiro.