Hannigan performed at Electric Picnic 2009 Later in 2009 , she toured the United States with David Gray and performed solo shows in New York , Los Angeles and London . She then began a tour of Ireland to finish the year . Hannigan 's song " An Ocean and a Rock " was used in a 2009 Irish video supporting same-sex marriage entitled " Sinéad 's Hand " . As part of an advertisement campaign for Oxfam 's Make Trade Fair , Hannigan was drenched in melted chocolate and she participated in the Irish musical collective The Cake Sale with lead vocal on the track Some Surprise , which was played on the US television series '' Grey 's Anatomy ''
Electric Picnic 2009
Electric Picnic 2009
Lisa Hannigan