Midnight Sun is the fifth mini album (counted as fifth, sixth overall) by South Korean boy band Beast. It was released on July 22, 2012 with the song "Beautiful Night" as the promotional track. The song "Midnight" was released one week before the mini album's release, on July 15, 2012, as a pre-release single. On May 16, 2012, A hint about their comeback in South Korea was notified by the B2UTYs (Beast fan-club name) in some tweets of Cube Entertainment's CEO Hong Seong-sung. In one of his tweets, he replied “All you B2UTYs, we are planning on making the greatest comeback ever known”. In July 3, the group members were spotted shooting a music video in New York during July 1 until July 7. It was the first time that the group shooted a music video outside South Korea. The group made the official announcement of their comeback in South Korea on July 11 via Google+. Titled Hang Out Live on Air, the group announced that their new mini album will be released in July 22. On the same day, a photo teaser showing the EP's name, with the title "Midnight Sun", and the release date, July 22, 2012, was revealed on Beast's official Korean website. One day later, on July 12, Cube Entertainment announced that the song "Midnight" will be released as a pre-release single on July 15. In July 13, the first bunch of teaser images were revealed at Cube Entertainment's Facebook account. In July 14, a teaser video of the music video of "Beautiful Night" was released. In July 15, "Midnight" was released digitally on South Korea music portal sites. On the same day, a theme music video of the song was also released. In July 17, Cube Entertainment revealed the title track of the mini album, the song "Beautiful Night", and revealed two teaser photos of the members Doo-joon, Jun-hyung and Dong-woon. On the next day, two more teaser photos were revealed, featuring the members Hyun-seung, Yo-seob and Gi-kwang. In July 19, it was revealed the mini album's tracklist, as well the composers and writers of the songs. In July 20, a teaser of the music video for "Beautiful Night" was released on the group's YouTube account. In July 22, both EP and music video for "Beautiful Night" were released simultaneously.