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LONDON, UNITED KINGDOM - JULY 13: Kim Thayil of Soundgarden performs on stage on Day 1 of Hard Rock Calling at Hyde Park on July 13, 2012 in London, United Kingdom. (Photo by Christie Goodwin/Redferns via Getty Images)

LONDON, UNITED KINGDOM - JULY 13: Kim Thayil of Soundgarden performs on stage on Day 1 of Hard Rock Calling at Hyde Park on July 13, 2012 in London, United Kingdom. (Photo by Christie Goodwin/Redferns via Getty Images)