Bangarang is the fourth extended play (EP) by American electronic music producer Skrillex. It was released on December 23, 2011, via Beatport while being released on other digital retailers on December 27, 2011. It was released on January 24, 2012, as a physical CD. It was announced via Skrillex's Twitter page on December 12, 2011, that the album was completed, while the release date was also announced on December 21. The record is mostly a collection of songs that have been previously performed during The Mothership Tour (with the exception of "Right on Time"). It features collaborations with The Doors, Sirah, Wolfgang Gartner, 12th Planet, Kill the Noise and Ellie Goulding. Musically, Bangarang has multiple influences of electro, dubstep and techno, while also incorporating elements of eurodance, drum and bass, rap rock, experimental rock and ska. It features syncopated rhythmic build-ups, technical breakdowns and "chopped-up" vocal hooks, as well as multiple vocal samples. An orchestral song was also featured as a bonus track on the iTunes edition. Bangarang received mixed reviews from music critics, but was a commercial success upon release, charting within Australia, Canada, New Zealand, Norway, Switzerland, the United Kingdom and the United States. Its lead single, "Bangarang", charted in multiple countries worldwide and reached the top 10 in Australia and Belgium. Due to strong digital sales following the album's release, "Kyoto" and "Breakn' a Sweat" charted in multip