Since topping the Sound of 2011 list, Jessie J's album Who You Are has gone on to be the biggest-selling debut album of the year in the UK. She was joined in the top five by James Blake, The Vaccines, Jamie Woon and Clare Maguire.

BBC: Sound of 2012 list revealed

"If you just want an impression of the side effects of a drug, those impressions are pretty accurate, " says Thomas J.

WSJ: Searching for Side Effects