Fifteen of the best rising music stars were announced as the longlist for the BBC's Sound of 2009 in December.

The list is designed to find the best up-and-coming acts for the coming year, and Little Boots has been named winner.

More than 130 of the UK's leading music critics and broadcasters named their favourite new acts, and the 15 with the most votes have made the longlist.

Adele triumphed at number one in Sound of 2008, followed by Duffy, The Ting Tings and Glasvegas.

The longlist is below. Click on the links to watch, hear and read about the acts.