With a goofy name and a sound that spans noise, metal, dance-punk, and pop, London's Test Icicles formed in 2004 out of a group of friends who made up spur-of-the-moment bands and played impromptu gigs. Before arriving in London, Florida-born Sam Mehran moved to Australia at age seven and played in metal and punk bands; Smashing Pumpkins and Slipknot fan Devonte Hynes was born in Texas and moved to Edinburgh, Scotland, as a child; and native Briton Rory Aggwelt moved to London to attend art school. Aggwelt and Mehran needed a vocalist for their current band, Balls, and recruit...