The lyricist behind CHI CHI's comeback track, "Love Is Energy", has been revealed to be singer-songwriter Sunday Brunch.

Sunday Brunch made her switch from singing to penning lyrics and has written a number of popular hits to date, like miss A's "Dazed", f(x)'s "Sorry", and recently Wax's "I Love You".

A representative explained, "CHI-CHI and Sunday Brunch are actually company labelmates, and she's been responsible for a lot of the group's musical growth. She not only writes their lyrics, but gives them unending support by acting as their vocal trainer and director."

Sunday Brunch made her debut in 2008 with "200km/h" and earned attention for songs like "10 Cents" and "Don't Leave".

Source + Photos: Star Today via Nate