The single main album "The Wolf and the Beauty" known in English as simply "Wolf", was composed by Will Simms, Nermin Harambasic by Dsign Music and composer of S.M. Entertainment Kenzie. Kenzie has of the letter for the version Korean of the song while Zhou Weijie wrote the letter for the version in Chinese mandarin, "狼与美女". Yoo Young-jin provides the vocals. The song dance was choreographed by Tony Testa. In various programs such as "After School Club" of Arirang, members explain that the dance has 3 elements: trees and forests, caves and the Wolf itself. The member Kris revealed that it took about 3 to 4 months to learn the choreography, because of their level of difficulty. A demo version of the song was leaked in February 2013, in response to producer Ryan Jhun later gave a warning to those who download illegally on May 29, 2013: "I'm going to inform of this to the FBI and the Department of service for all those links."