Between Us

"Between Us" is a song by South Korean pop rock idol band CNBLUE. It serves as the lead single to the band's seventh mini-album 7°CN and was released on March 20, 2017. Background and composition "Between Us" was written by Jung Yong-hwa, Hang Seong-ho, and Kim I-na, and composed by Jung and Justin Reinstein. It is composed in the key of E major using common time with a tempo of 140 beats per minute. Jung and Reinstein met while attending a song camp; originally titled "Wasted", the pair composed the track together. Musically, "Between Us" is a pop-rock and synth rock song. The lyrics deal with the "ambiguous and confusing feelings" leading up to start of a relationship. The song begins with a "light" and "upbeat rhythm", building into its "catchy" chorus of "syncopated rhythms" and a "strong rock sound". Jung showcases "tough and masculine vocals" on the track. Billboard magazine columnist Tamar Herman described it as a "propulsive fusion of rock 'n' roll and Top 40 dance music". Release and promotion "Between Us" was simultaneously released alongside 7°CN on March 20, 2017. CNBLUE began promoting the song three days later on Mnet's music chart show M Countdown, followed by subsequent comeback performances on Korean Broadcasting System's (KBS) Music Bank, Munhwa Broadcasting Corporation's (MBC) Show! Music Core, Seoul Broadcasting System's (SBS) Inkigayo, SBS MTV's The Show, and MBC Music's Show Champion.