Howling:Singing in series 7

In The Cold War the professor said he sang when he was nervous, and Clara sang at the very end to remind the marshall about his daughter. In The Rings of Akhaten (TV story), the Queen of Years had to sing to keep the sun god asleep. I need to watch The Bells of Saint John (TV story) again to see if there is any singing there, but could it be a theme for the second half of series 7? Whosethebestwho ☎  03:34, April 15, 2013 (UTC)