​Watch Thom Yorke Serenade Festival Crowd A Cappella During Radiohead's Tecnópolis Set

​Watch Thom Yorke Serenade Festival Crowd A Cappella During Radiohead's Tecnópolis Set
Radiohead headlined Argentina's Tecnópolis Festival this past weekend, ironically running into some technical difficulties during their set.
 
Midway through the band's performance, a barrier collapsed in the crowd and forced a delay in the set. Rather than heading backstage for a breather, though, frontman Thom Yorke kept the audience entertained with an a cappella rendition of Hail to the Thief track "The Gloaming."
 
Watch fan-shot footage of the simple, stripped-down performance below.
 
See Radiohead's upcoming North American summer tour dates here.