Singer songwriter vocal group Joy o'clock released a single, "Small Miracle" on September 29.

This is Joy o'clock's second single since their first one, "Mistake" that was released last September. They were known as a skilled duo, making fans who love their modern rock beat pop genre with sweet lyrics.

Their new song, "Small Miracle" is about a miraculous love, accompanied by piano, strings, and oboe.

The duo wrote and produced the song themselves. Their lyrics can make people who've experienced breakups and love relate to the song.

Joy o'clock were part of the chorus for famous singers including Park Hyo Shin, Park Jung Hyun, Kim Jo Han, and Jang Woo Hyuk.

They began to build up their careers singing drama OSTs.

Unlike other singers who've promoted themselves through broadcasts, shows, and events, Joy o'clock has only promoted their music talents.