The wait for Witness ends sooner than expected with an exclusive album reveal hosted live by Katy Perry tomorrow (June 8) at 8pm PT on YouTube. The Katy Perry: Witness World Wide event offers behind-the-scenes access for fans and promises "plenty of surprises" according to a press release.

Witness officially drops June 9 and includes singles "Bon Appétit" featuring Migos, "Swish, Swish" with Nicki Minaj, and Platinum-certified "Chained to the Rhythm" featuring Skip Marley. The album is Perry's fourth.

To check out Katy Perry: Witness World Wide tomorrow night, visit Katy Perry’s YouTube Channel or If you head to YouTube, you'll be among plenty of other fans. Perry has the third-most musical artist subscriptions (22,836,997) on the outlet, following Justin Bieber and Rihanna.

Watch Katy Perry's Best Live Vocals:

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