"Complete Mess" (stylised in all caps) is a song by Australian pop rock band 5 Seconds of Summer.

[6] The band teased "Complete Mess" in February 2022 sharing snippets of the song on TikTok and Twitter.

"[3]The song was recorded at Rancho V in Joshua Tree, Clifford's own home studio and Dragonfly Creek in Malibu.

"Complete Mess" was received with positive reviews, most praising the band for their growth and maturity of their sound.

Towards the end, they join together and walk towards a blue orb of light, which represents "the place where all the songs, all the love, and everything comes from in this life," according to drummer Ashton Irwin.