Teen Top's comeback concept may have turned heads with their silver wigs and futuristic transformation, but the group has been in the spotlight for earning the affection and support of the Shinhwa members. Their title track, "Supa Luv," also features extensive support from other big names, as it was produced by Shin Hyuk (the composer behind Justin Bieber's Billboard hit, "One Less Lonely Girl"), and features lyrics written by Wheesung. According to T.O.P Media, Shin Hyuk spent a total of 10 months on the track before the group had even debuted, as "Supa Luv" is his first track as a producer. The boys performed it live for the very first time on today's "M. Countdown", so check it out below! Source: Star News