As much as people recognise the Bond series for the cars, guns, gadgets and of course, the girls, the theme songs have also contributed significantly in making it the franchise it is today. From Shirley Bassey to Adele, a variety of artistes have been part of these sassy numbers. Last week, Grammy winner Sam Smith recorded, Writings On The Wall, the theme for the upcoming 007 film, Spectre. While fans of the series wait for the track to release on September 25, we pick the most memorable numbers of the lot: