The BBC have revealed the fifteen acts that have made their Sound of 2011 longlist. Among those acts are some names that have been making waves already this year, including James Blake, The Vaccines, Esben & The Witch and Warpaint (despite the fact that they formed all the way back in 2004 and already released their debut album 'The Fool' to much acclaim earlier this year), as well as some less familiar names.

Last year's top spot went to Ellie Goulding, while La Roux was named Sound of 2009. Check out the BBC's top 15 tips for 2011 below:

Anna Calvi

Clare Maguire

Daley

Esben & The Witch

Jai Paul

Jai Paul - BTSTU by padarnalat

James Blake

Jamie Woon

Jessie J

Mona

Nero

The Naked & Famous

The Vaccines

Warpaint

Wretch 32

Yuck