Rihanna and Mumford & Sons to headline T in the Park "We are unbelievably excited that Mumford & Sons and Rihanna will be taking to the main stage in Kinross as we are sure our audience will be," he said. Rihanna has recently released Unapologetic, her seventh studio album in seven years, and is currently dominating the charts with her single Diamonds. Mumford & Sons released their second album, Babel earlier this year, which became the fastest selling album in the US. A limited number of T in the Park 2013 tickets will be available at 2012 prices at 9am on Friday (December 7th). See www.tinthepark.com Rihanna on MUZU.TV.