KNK is a 5 member boy group under YNB Entertainment. Fandom name: Tinkerbell. On December 15, 2015 their teaser was uploaded on their official youtube channel and on December 26 they performed their two debut songs for the first time at SBS Awards Festival. KNK consists of 5 members; Seoham, Seungjun, Inseong, Jihun, Heejun. Past member; Kim Youjin. On February 26, 2016 they had their official debut with their song 'Knock'. KNK is an initialism which stands for K-pop kNocK. It means "to knock on the door of K-pop with their music." KNK released their first digital single "I Remember" on May 16, 2016. On May 23, YNB Entertainment announced the comeback of the group with their first EP titled Awake. On November 7, KNK's comeback with their second EP titled Remain was announced. The track list was also released on the 10th, "Goodbye" and "Tonight" were composed and written by members Youjin and Heejun respectively. On May 12 2017, KNK announced their first comeback of the year by releasing a promotion plan poster. The group's second single album named Gravity will be released on the 25th. It features its lead single titled "Sun. Moon. Star". The choreography for the lead single was arranged by KNK's leader Jihun.

After teasing their powerful vocals for title track “Sun.Moon.Star” with a dreamy teaser, KNK has finally released the MV for the track. “Sun.Moon.Star” is the title track of their album “Gravity,” which was released on the 25th of May at noon KST. “Sun.Moon.Star” was produced by Kim Tae Joo, who is best known as the other half of Good Life, a producing team comprised of himself and Highlight’s Yong Junhyung. (Soompi)

KNOCK
Album: Single
Date: March 3, 2016
Title: KNOCK

AWAKE
Album:Mini
Date: June 2, 2016
Title: Back Again

Remain
Album:Mini
Date: Nov 17, 2016
Title: U

Gravity
Album:Single
Date: May 5, 2017
Title: 해달별

Gravity Completed
Album:Repackage
Date: July 20, 2017
Title: Rain

Lonely Night
Album:Single
Date: Jan 7, 2019
Title: Lonely Night