Combining glossy '80s synth pop and arena-friendly choruses on singles such as "Pompeii," London's Bastille sold millions of their debut album Bad Blood. The group began as the solo project of singer/songwriter Dan Smith — whose birthday is July 14 (aka Bastille Day) but became a full-fledged band in 2010 with the addition of Chris Wood, William Farquarson, and Kyle Simmons. Bastille attracted a lot of attention after putting a few tracks online, leading to support slots at major U.K. festivals...