KATY PERRY - ROAR

"Roar" is a song by Katy Perry and the lead single from her fourth studio album, Prism (2013). Composed by Perry, Dr.Luke, Max Marting, Bonnie McKee, and Cirkut.
The song received generally positive reviews from music critics, who thought it was a "determined note" for Perry's new album and described it as a "sure-to-be radio hit".Although most reviews were positive, some thought the lyrics were predictable and contained "cliches".The single became the singer's eighth non-consecutive US Billboard Hot 100 number one, and gave Perry her biggest digital song sales week ever, breaking her previous record held by "Firework".The song also peaked within the top 10 of 25 other charts, while topping music charts at 9 countries in total. A video for "Roar" was released on September 5, 2013, which was directed by Grady Hall and Mark Kudsi, and filmed at the Los Angeles Country Arboretum and Botanic Garden..

EMINEM- BERZERK

"Berzerk" is a song by American rapper Eminem, produced by renowned American music producer Rick Rubin. The song, released on August 27, 2013 in the US, is the first single from Eminem's upcoming eighth studio album The Marshall Mathers LP 2. The song samples Billy Squier 's "The Stroke", as well as the Beastie Boys' "The New Style" and "Fight for Your Right", both songs taken from their 1986 debut album Licensed to III, which Rubin had also produced. The song was heavily downloaded in its first week of release, resulting in the song debuting at number three on the U.S. Billboard Hot 100.