So, it has been announced that on the 17th of October a collaborative 12'' between Massive Attack and Burial will be released, and will be limited to a 1000 copies. Both tracks are around 12 minutes long.

You can stream Four Walls here: http://massiveattack.com/blog/2011/10/10/four-walls-massive-attack-vs-burial-ltd-edition-12/

More info here: http://www.factmag.com/2011/10/10/massive-attack-vs-burial/

Any thoughts?