"Serotonin" is a song by Norwegian indie rock singer-songwriter Girl in Red, released as a single on 3 March 2021 from her debut studio album If I Could Make It Go Quiet (2021).
She explained that "Serotonin" is for solving "self-destructive tendencies and mental health struggles through a more expansive soundscape".
[6] Layla Halabian of Nylon felt the song is "a genuine approach to dealing with, well, life, complete with an anthemic hook that make the low points seem a little more bearable.
According to a description by Daniel Peters of NME, it features "old home video montage, with Ulven running through fields and riding a car down a highway with red balloons", and the parts of climax is Ulven "flying through a fantastical sequence of a sunrise, Egyptian pyramids, and the default Windows XP wallpaper.
"[8] In early May 2021, Ulven made her debut on US television, performing the song at The Tonight Show Starring Jimmy Fallon.