EDM outfit Krewella has a boisterous style that draws upon numerous dance music subgenres, including dubstep, hardstyle, progressive house, and trap. The group was formed by sisters Jahan Yousaf and Yasmine Yousaf in Northbrook, Illinois, a small town north of Chicago. They got together in 2007 -- originally as a trio featuring Kris Trindl -- but didn't release their first material until 2011, when they uploaded a handful of songs, including the jagged and celebratory 'Life of the Party,' to their SoundCloud page. In 2012, the group self-released its first two EPs: Play Hard (June), featuring the reggae-flavored 'Killin It,' and Play Harder (December). The former reached number ten on Billboard's Top Dance/Electronic Albums chart. The same year, Krewella became a staple of the festival circuit, including New York's Electric Zoo and Texas' Meltdown. The year 2013 saw the release of the group's first proper album, the bombastic Get Wet.