HULL, ENGLAND - MAY 27: Katy Perry headlines and performs on stage on Day 1 of BBC Radio 1's Big Weekend 2017 at Burton Const
Jo Hale/Redferns

Katy Perry's first album in nearly four years, Witness, has arrived. Featuring Nicki MinajMigos and Skip Marley (on the lead-up singles "Swish Swish," "Bon Appétit" and "Chained to the Rhythm"), the record runs 15 tracks and just under an hour. It follows 2013's Prism, which included "Roar" and "Dark Horse."

Witness, counting 2001's pre-fame Katy Hudson, is Perry's fifth full-length. Steam it below:

Katy Perry's Witness Tour launches Sept. 7 in Columbus, Ohio and runs through Feb. 5 in Vancouver, British Columbia. She has also signed on as the first judge for ABC's American Idol reboot.

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