Complete Collapse

Complete Collapse is the seventh studio album by American rock band Sleeping with Sirens. It was released on October 14, 2022, by Sumerian Records. It serves as a follow-up to their sixth studio album, How It Feels to Be Lost (2019). It is their first album to feature drummer Matty Best of Tonight Alive who replaced longtime drummer Gabe Barham. It is also their final album to feature longtime guitarist Jack Fowler, who departed the band early before the album's release. The album also features guest appearances from Spencer Chamberlain of Underoath, Charlotte Sands, Royal & the Serpent, and Dorothy.

Promotion
On June 2, 2021, Sleeping with Sirens released the song "Bloody Knuckles" as the lead single of the then-untitled album. A second single, "Crosses", which features Spencer Chamberlain of Underoath, was released on June 22, 2022, simultaneously with the album's announcement, followed by the releases of two promotional singles "Let You Down" featuring Charlotte Sands, and "Ctrl + Alt + Del" on August 11, 2022. The single "Complete Collapse" was released on September 14, 2022, alongside an accompanying music video. On September 29, 2023, the band released the deluxe version of the album.

Personnel
Sleeping with Sirens Additional Personnel Production
 * Kellin Quinn – lead vocals
 * Nick Martin – rhythm guitar, backing vocals
 * Jack Fowler – lead guitar, programming
 * Justin Hills – bass guitar, backing vocals
 * Matty Best – drums, percussion
 * Spencer Chamberlain – vocals (Crosses)
 * Charlotte Sands – vocals (Let You Down)
 * Royal & the Serpent – vocals (Be Happy)
 * Dorothy – vocals (Us)
 * Producer – Andrew Marcus Baylis, Zakk Cervini
 * Programming – Randy Slaugh