Katy Perry: Part of Me 127 concerts from February 20, 2011 to January 22, 2012. Most of the performances were recorded on November 23, 2011, at the Staples Center in Los Angeles, but also included performances in Tokyo and São Paulo. Some of her friends such as Rihanna, Lady Gaga, Adele and Jessie J make cameos in the film. The documentary includes scenes of Perry dealing with the breakdown of her marriage with English actor/comedian Russell Brand. Principal cast Cameos On March 7, 2012, Katy Perry announced via Twitter that she and Paramount Pictures would release a part-biopic, part-concert film entitled "Katy Perry: Part of
Lights On (Katy B song) Lights On (Katy B song) "Lights On" is a song performed by British recording artist Katy B and serves as the second single from her debut album, "On a Mission". It features UK-based R&B singer/ rapper Ms. Dynamite. It was released in the United Kingdom on 10 December 2010 as a digital download. It peaked at number 4 on the UK Singles Chart on 26 December 2010. Having initially been predicted to debut at number 2 behind "The X Factor" winner Matt Cardle's "When We Collide", "Lights On" debuted on the UK Singles Chart at number 4 on 26 December