The BBC's Sound of 2014 longlist:
Chance The Rapper
Say Lou Lou
Playlist of full/ more songs
Launched in 2003, the BBC Sound Of...poll has a history of predicting the acts that will make it big. Last year's winners were Californian band HAIM, who went on to have a Number One in October with their debut album, Days Are Gone. Previous winners have included Adele, Ellie Goulding and Jessie J.
Source 1, 2, 3