Top-Selling U.S. iTunes Albums of 2012: Mumford & Sons' 'Babel'
Three years after making their debut, the British indie folk band dropped their second studio album, Babel, in September 2012, premiering at No. 1 in both the UK and U.S. But even their 2009 record, Sigh No More, brought in big bucks this year, landed in iTunes' No. 6 slot for top-selling album.