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Their new single album will contain 4 tracks total, including title track "Sun, Moon, Star". The song is a medium tempo R&B song composed by composer Kim Tae Joo, whom KNK has worked with since their debut. KNK said about "Sun, Moon, Star", "We received this song while promoting 'YOU'. We decided on it as the title of our next comeback unanimously because we liked the style. We've only shown fast, powerful tracks so far, but the members wanted to try a genre like 'Sun, Moon, Star'. We are nervous and excited to see how fans react to our change in concept." 

The interviewer commented after listening to "Sun, Moon, Star" that it had similar emotional tones as B2ST's "12:30". KNK agreed, saying, "It is by the same composer". They also added, "But we want to give fans an emotional tone that is our very own." 

What are KNK's goals for this year? The group answered, "Realistically speaking, we would like for 'GRAVITY' to sell over 30,000 copies, and we would like to appear on 'Weekly Idol' as the main guests on an episode (laughter)." 

KNK's 2nd single album 'GRAVITY' will be out on May 25 at noon KST!