Group Nine Muses Hyuna was featured in indie band Twenty's new song.

The song that featured Hyuna was, "The 11^th Number That Won't Erase," which was released on October 20.

"The 11^th Number That Won't Erase" is about a couple that had recently broken up but cannot forget about each other. Hyuna's sweet voice matched the song well.

Hyuna is a vocal of Nine Muses along with Kyungri and Hyemi. Her collaboration with an indie band was unexpected but produced well.

A member of Twenty, Hwang Dae Hyun, also went to the same school as Hyuna in high school. The relationship between the two also brought them together for the song.

Hyuna is currently preparing for a comeback with Nine Muses.