天上智喜 (TSZX) (Tenjo Chiki) / 천상지희 The Grace (CSJH) (Cheon Sang Ji Hee), is made up of members Lina, DANA, Sunday and Stephanie, released their first single, title track "Too Good", on April 29. The result of their hard work is a collection of four songs. They include an a cappella version of Elvis Presley's "Can't Help Falling in Love" without instrumental accompaniment, pop ballad "Too Good," a Korean version of Japanese Kiroro's "Nagai Aida" sung under the title "Your Smile" and upbeat dance number "Boomerang".