Musically, "Happier" is a doo-wop and folk-pop piano ballad, with a deep bass production.
The lyrics of the song details the struggles of moving on from a break-up while selfishly wishing their former partner to be less happy with their new relationship.
"Happier" was released as one of the eleven songs from Olivia Rodrigo's debut album, Sour.
[5] "Happier" is a piano-led Fifties-style doo-wop[6] and folk-pop[7] ballad,[6] with a deep bass production.
[9] Rolling Stone critic Angie Martoccio said that the song is "one of the [album]'s sparkly highlights".
[10] In the United States, following the release of Sour, "Happier" debuted within the Billboard Hot 100 at number 15, next to the 10 other tracks from the album.