As well as the reported appearances from Sam Sparro, Yoko Ono and Santigold, the Brixton duo have been joined by grime MC Chipmunk, Paloma Faith, lesbian rappers Yo Majesty, Kelis, Eli 'Paperboy' Reed, Amp Fiddler and Lightspeed Champion.
Here's the tracklisting:
She's No Good
Day Of The Sunflowers (We March On)
What's A Girl Gotta Do
Gimme Somethin' True
Said Felix: "I am definitely at a stage where I'm not doing this for myself anymore. It seems pointless if it's just for ourselves. It's important that people like what we do. If they don't, I'm not happy.
"We've put a lot of effort into this record. If people don't like it, it's a waste of time. There are lots of great artists who make great music while they remain in the background. However, I don't want to be one of them."