Mumford & Sons put 'pressure' on themselves over songs
28 February 2013 Last updated at 06:09 GMT
Mumford & Sons bandmates Ben Lovett and Winston Marshall say they put "pressure" on themselves to make their albums better each time.
The band won best group at the Brits this year after winning best album at The Grammys for their second album Babel.
The band were speaking to Newsbeat's Nesta McGregor at the Brit Awards ceremony.