On this day in 2009, President Obama honoured his musical hero, with America's highest award for pop music, the Library of Congress' Gershwin prize at a ceremony at the White House. The president said the legend had been the soundtrack to his youth and he doubted that his wife would have married him if he hadn't been a fan. Wonder's song 'Signed, Sealed, Delivered' had been the theme song during Obama's presidential campaign.