Witness (Katy Perry album)
Witness is the fifth studio album by American singer-songwriter Katy Perry.  It was released on June 9, 2017, by Capitol Records.  On February 10, 2017, Perry released the single "Chained to the Rhythm", which reached the top five in many countries worldwide, including the US, UK, and Canada. It features the grandson of Bob Marley, Skip Marley, and was co-written by Australian singer-songwriter Sia. Two months later, the single "Bon Appétit" was made available for download. The hip-hop group Migos is featured on this song.