The show will be broadcasted live on twitter for all fans to enjoy. Also, both songs will be available immediately for download (mp3).
A limited edition double A-side 7 inch vinyl will be out for release on August 6th 2012.
Which roof exactly are we talking about here? No details have been revealed, but early guesses include somewhere busy like South Bank, HMV Oxford Street, BBC's broadcasting house in London, Rough Trade's roof (which is near the Westway) or perhaps Portobello Road.
Stay tuned and look out for more Blur news, in this exciting, exciting time! Follow Blur on Twitter HERE.
Is Damon and Graham Coxon recording together? Find out HERE
Check out Blur's rumoured new album HERE.
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