2AM's Changmin, SHINee's Onew, B1A4's Sandeul, and Kim Yeon Woo performed a special collaboration on 'Fantastic Duo 2'.

"Lucifer" is one of SHINee's greatest hits that swept the charts a few years ago and is one of their most characteristic songs. These four talents are already well-known to be great singers, but the way they re-arranged the vocals and performed beyond anyone's expectations.

Check out the full performance below.