Mumford & Sons, 'Babel' (9/25)
"There is pressure when you've had a successful record," says Mumford bassist Ted Dwane. The folk-rock stars cut the follow-up to their smash 2009 debut, Sigh No More, over a year and a half during breaks from the road. The results crank Mumford's signature sound up to 11, with louder guitars amping the emotion on tracks that they recorded mostly live in the studio. Adds Dwane, "On the first album, we couldn't have pulled that off."