SEE ALSO: T-ara decides to go with a double title track for their comeback

According to Core Contents Media, the composer of "I Know the Feeling", Park Duk Sang, suggested the collaboration with Eunjung for an acoustic arrangement of the song.

Eunjung, who is a fan of acoustic music, shared, "I took part in the arrangement for a T-ara song for the first time, and I enjoyed participating with a willing heart to learn. I worked hard to prepare every small detail, so fans can listen to it...�It would be nice to listen to the acoustic guitar sound this fall. I hope everyone likes 'Number 9' and 'I Know the Feeling'."

T-ara will follow the trend of double title tracks by releasing the music videos for "Number 9" and "I Know the Feeling" when their 8th mini album 'AGAIN' drops on the 10th. T-ara will also return to the domestic stage starting on 'M! Countdown' this week!

Tip: Chesskid1