After releasing their comeback single on January 6th, SECRET held their comeback performance on today's episode of Music Core with their title track, "Shy Boy"! The girls have already completed half of their debut performances this week and shared some of their thoughts on the changes they underwent for "Shy Boy." They revealed, "It was a different kind of pressure we felt with this concept since it wasn't like 'Madonna'' or 'Magic.'  We were extremely satisfied with the monitoring results of our music video because all of us came out so pretty.  However, we're worried about what the public will think when they watch us perform.  Zinger especially, we didn't think she'd be able to pull off the cute concept because she doesn't like it, but she was complimented the most by the MV director." "Shy Boy" has been enjoying much attention ever since its release by ranking in on live time charts.  Their cute retro concept earned positive reviews from listeners, with many complimenting the rookie girl group for presenting a fresh 'swing dance' concept to the industry. The song is a collaboration between composers Kang Jiwon and Kim Kibum, and features an American retro concept from the 60s.  With the help of real musical actors, the girls have put on a fantastic swing dance performance. Check it out below! Source: Asia Economy via Daum