3x2=6  "3x2=6" is a digital music project by South Korean singer Yook Sung-jae from December 2019 to February 2020. The project single series featured 2 tracks every month for 3 months, the number '6' is a reference to Yook's name which translates to "6" in Korean. The project consists of three themes; Singer, Human and BtoB. It started on December 26, 2019 with the released of "YOOK" and "From Winter", "W.A.U" (What About U) and "Chicken" on January 16, 2020, and concluded with "HMHN" and "Hypnotized" on February 6, 2020 with a total of 6 songs. All 6 tracks was later included in Yook's first album "Yook O'Clock". Yook shared in an interview with "Singles" magazine that he couldn't show something musically in 2019. He hopes to have a chance to reinforce the plans he wanted to do in 2019 and complete it in 2020. The theme for "3x2=6 Part 1" is Singer Yook. Yook wanted to show his vocal skills as well as his writing and composing skills. "Yook" is described as a melodic modern rock genre with lyrical ballad songs. "From Winter" is a ballad song with the lyrical and heartrending piano play giving a dreamlike and warm vibe. The theme for "3x2=6 Part 2" is Human Yook. The title song is "WAU" (What About U). It is an EDM pop describing the mood after the breakup. Another song, "CHICKEN", expresses that Yook hopes that even if time passes, he will still be loved by the public for a long time. The song is described as cheerful and pleasant beat with high piano and groovy bass sound. The concept for "3x2=6 Part 3" is BtoB Yook. Title track "HMHN with Jung Il-hoon" (What About U) meaning the determination not to say even if there are a lot to say is the first official collaboration track between Yook and Ilhoon. Another collab song "Hypnotized", with member Peniel Shin. Together they took part in composing and writing the song. It was first performed live at concert in 2018. The song was released due to the requests by fans for releasing the track after the concert. the first official collaboration track between Yook and Ilhoon.