Biography: Atmospheric English indie pop group the xx formed in London in 2008 around the talents of Romy Madley Croft, Oliver Sim, Baria Qureshi, and Jamie Smith, when the bandmembers were still in high school. Captivating and cool, the group cites influences that run the gamut from R&B (Aaliyah and Rihanna) to classic alternative rock (the Cure and the Pixies). Built around the duel vocals of Croft and Sim, the group's signature brand of moody, soulful indie rock first appeared on the public radar in early 2009 with the single "Crystalised," which created a huge buzz among critics and fans alike. The xx released their self-titled debut LP in July of that year in the U.K.; it was released in the U.S. the following month. Late that year, Qureshi was no longer part of the group; the rest of the xx released a statement via NME saying this was due to "personal differences." During 2010, the live dates only continued, including spots at several high-profile summer festivals, and in September, their album won Britain's coveted Mercury Prize.