UK electro stylemasher SBTRKT took to BBC 1 Live Lounge today to premiere a cover of Friendly Fires' "Blue Casette." SBTRKT also played his own "Hold On" from SBTRKT. Frequent SBTRKT collaborator Sampha's here singing on both. Check 'em after the jump. According to Australia's triple j, SBTRKT and Friendly Fires will collaborate for each of their respective, upcoming albums.