Barrow is also streaming his soundtrack for new film 'Ex Machina' - listen
Band's 1994 album will be re-released to celebrate two decades since its arrival
She sings on the new version of the song by stoner metal band Gonga
The band last released an LP - 'Third' - in 2008
Neither act has performed in the country before
The singer will create the sound for a giant polar bear which will lead a march through London next weekend
Musician gets involved in row with local mayor over plans for a £40m arena in the city
But the R&B singer still hasn't issued public response...
The band are currently working on their fourth album
Trio will play shows in Italy, France and Spain this summer