Complex sentence: C9 Entertainment announced on May 20 that JJY Band decided to change their name to Drug Restaurant because they want to go with a name that focuses on the band altogether rather than centering it around the frontman vocalist.
Split into simpler sentences: C9 Entertainment announced on May 20 that JJY Band officially change their name to Drug Restaurant. They decided to change the band's name because they want to go with a name that focuses on the band altogether rather than centering it around the frontman vocalist.