Da Capo is the seventh and final extended play by South Korean girl group April and their first one since 2018's The Ruby.

According to DSP Media, the album's title "Da Capo" is a musical term which means "from the beginning".

It is an upbeat, disco-influenced EDM track with a repetitive hook, and gets less intense during the verses than the chorus, with a middle-eight rap from members Chaewon, Rachel, and Yena.

Upon release, many fans compared "Lalalilala" to April's former labelmates Kara's sound, pointing out the song's grand chorus.

The group started promoting "Lalalilala" on April 23, 2020, on Mnet's M Countdown, followed by performances on KBS's Music Bank, MBC's Show!