One of the most successful acts to come out of the 21st century's English folk-rock revival, Mumford & Sons' agreeable fusion of bluegrass, folk, country, and rock found favour with audiences both at home and abroad when they released their debut album, Sigh No More, in 2009. Their chart-topping sophomore effort, 2012's Babel, won Album of the Year at both the Brit and Grammy Awards, which led to the band headlining the 2013 Glastonbury Festival.