Witness is the fourth studio album by Katy Perry, released in June 2017 on Capitol Records and produced by Max Martin, Dr. Luke, Stargate, Sia, and others, the most commercially divisive album of Perry's career, arriving amid a public conflict with Taylor Swift that dominated the press narrative and a thematic shift toward 'purposeful pop' that critics found awkward. Perry co-wrote most tracks; 'Chained to the Rhythm' (featuring Skip Marley), 'Bon Appétit' (featuring Migos), and 'Swish Swish' (featuring Nicki Minaj) were the principal singles. The album debuted at number one on the Billboard 200 but sold only 180,000 first-week units, a significant decline from Prism, and has been certified platinum in the United States. Critical reception was broadly negative, with reviewers citing the album's thematic inconsistency and the gap between the 'purposeful pop' concept and the actual lyrical content. Witness is regarded as the commercial and critical low point of Perry's catalog.
Track Listing & Credits
| # | Title | Lyricist(s) | Composer(s) | Producer(s) | Performers |
|---|---|---|---|---|---|
| 1 | Witness | Katy Perry, Max Martin, Lukasz Gottwald, Henry Walter | Katy Perry, Max Martin, Lukasz Gottwald, Henry Walter | Dr. Luke, Max Martin |
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| 2 | Hey Hey Hey | Katy Perry, Max Martin, Sia, Ali Payami | Katy Perry, Max Martin, Sia, Ali Payami | Max Martin, Ali Payami |
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| 3 | Power | Katy Perry, Tor Erik Hermansen, Mikkel Storleer Eriksen, Ferras Alqaisi | Katy Perry, Tor Erik Hermansen, Mikkel Storleer Eriksen, Ferras Alqaisi | Stargate |
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| 4 | Roulette | Katy Perry, Tor Erik Hermansen, Mikkel Storleer Eriksen, Noonie Bao | Katy Perry, Tor Erik Hermansen, Mikkel Storleer Eriksen, Noonie Bao | Stargate |
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| 5 | Swish Swish (feat. Nicki Minaj) | Katy Perry, Max Martin, Lukasz Gottwald, Henry Walter, Ferras Alqaisi | Katy Perry, Max Martin, Lukasz Gottwald, Henry Walter, Ferras Alqaisi | Dr. Luke, Max Martin |
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| 6 | Deja Vu | Katy Perry, Max Martin, Lukasz Gottwald, Henry Walter | Katy Perry, Max Martin, Lukasz Gottwald, Henry Walter | Dr. Luke, Max Martin |
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| 7 | Into Me You See | Katy Perry, Tor Erik Hermansen, Mikkel Storleer Eriksen, Ferras Alqaisi | Katy Perry, Tor Erik Hermansen, Mikkel Storleer Eriksen, Ferras Alqaisi | Stargate |
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| 8 | Living Human Instrument | Katy Perry, Tor Erik Hermansen, Mikkel Storleer Eriksen | Katy Perry, Tor Erik Hermansen, Mikkel Storleer Eriksen | Stargate |
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| 9 | Miss You More | Katy Perry, Max Martin, Lukasz Gottwald, Henry Walter | Katy Perry, Max Martin, Lukasz Gottwald, Henry Walter | Dr. Luke, Max Martin |
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| 10 | Chained to the Rhythm (feat. Skip Marley) | Katy Perry, Max Martin, Sia, Ali Payami, Skip Marley | Katy Perry, Max Martin, Sia, Ali Payami | Max Martin, Ali Payami |
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| 11 | Tsunami | Katy Perry, Max Martin, Lukasz Gottwald, Henry Walter | Katy Perry, Max Martin, Lukasz Gottwald, Henry Walter | Dr. Luke, Max Martin |
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| 12 | Pendulum | Katy Perry, Tor Erik Hermansen, Mikkel Storleer Eriksen, Ferras Alqaisi | Katy Perry, Tor Erik Hermansen, Mikkel Storleer Eriksen, Ferras Alqaisi | Stargate |
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| 13 | Bigger Than Me | Katy Perry, Tor Erik Hermansen, Mikkel Storleer Eriksen, Ferras Alqaisi | Katy Perry, Tor Erik Hermansen, Mikkel Storleer Eriksen, Ferras Alqaisi | Stargate |
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| 14 | Mind Maze | Katy Perry, Max Martin, Lukasz Gottwald, Henry Walter | Katy Perry, Max Martin, Lukasz Gottwald, Henry Walter | Dr. Luke, Max Martin |
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| 15 | Act My Age | Katy Perry, Tor Erik Hermansen, Mikkel Storleer Eriksen, Ferras Alqaisi | Katy Perry, Tor Erik Hermansen, Mikkel Storleer Eriksen, Ferras Alqaisi | Stargate |
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Data note: Credits compiled from Wikipedia and liner notes. Katy Perry typically holds lyricist and composer co-credits on her own songs alongside professional producers.