The London Olympic 2012 Paralympics closing ceremony came to a end with Coldplay performing 'Paradise', Coldplay was also joined by Rihanna who lent her vocals their collaboration 'Princess Of China'. Jay-Z later accompanied Rihanna to perform 'Run This Town' with Coldplay, the magnificent event ended with extravagant fireworks.
Source: ConsequenceOfSound.net
Bonus: Full coverage and photos at Guardian.co.uk