Niki & The Dove, Flux Pavillion and Spector are also named as tips for the top
The annual poll is voted for by over 160 music journalists, commentators and tastemakers, and was won last year by Jessie J. It has been won in previous years by Ellie Goulding, Little Boots and Adele.
The winning act and a top five will be announced early in January. See BBC.co.uk/music/soundof/2012 for more details.
The BBC Sound of 2012 Longlist is as follows:
Dry The River
Jamie N Commons
Lianne La Havas
Niki & The Dove