Teeth

"Teeth" is about a toxic relationship with a girl who has multiple personalities. Fight so dirty, but your love so sweet Talk so pretty, but your heart got teeth Late night devil, put your hands on me And never, never, never ever let go 5 Seconds of Summer's single "Youngblood" has a similar theme. Both are about a romance that veers between lust and lament.

"Teeth" came about after the band had been writing for a month or two and were searching for something that was a step further than "Youngblood." Said frontman Luke Hemmings: "It was a tumultuous time in my life and the lyrics in the song definitely reflect that. It speaks lyrically about a trying time in my current relationship."

The bass-heavy track was written by 5 Seconds' Luke Hemmings and Ashton Irwin with Ali Tamposi, Ryan Tedder, Andrew Watt and Louis Bell; Watt and Bell produced the song as well. Tamposi, Tedder, Watt and Bell also penned 5 Seconds of Summer's previous single, "Easier," with the band.