Music News Glastonbury performing arts festival tickets sell out in four hours 10/04/2010 Tickets for England's Glastonbury 2011 performing arts festival sold out in 4 hours, organizers said on the event's Web site. Read More RELATED NEWS Jimmy Fallon's 'The Tonight Show' dropping to only four nights a weekAshley Tisdale announces birth of her second childSelena Gomez is a billionaire TAGS: