Susan Boyle forgot the words to 'Mull of Kintyre' during last night's (23 July) opening ceremony for the Commonwealth Games. See footage below.

Ever the proffesional, she managed to mask this by just sort of humming them... Kind of like you might do at karaoke. The result is a little hilarious, part of one of the most bizarre opening ceremonies ever, featuring performances from Jon Barrowman, Rod Stewart and many more class acts. 

Watch Susan Boyle forget the words below

Needless to say, Simon Cowell's singing scot, managed to make it through the rest of the song unscathed. Prior to taking to the stage she told Clare Balding that the performance was two years in the making. Ouch.