SM Entertainment planned to partner SHINee and f(x) together. Victoria is with Onew, Luna is with Jonghyun, Amber is with Key, Krystal is with Minho and of course Sulli is with Taemin. Each pairs will have their own mini album and promote them. The first pair to release their album is Taelli. The song that they will use to promote the album is "Trouble Maker" (i know that the song is for BEAST's JS and 4minute's Hyuna but just imagine that Taemin is Hyunseung and Sulli is Hyuna, alright?)