Soulwax and 2ManyDJs have been added to the Bestival line-up.
The acts, both made up of Belgium duo David and Stephen Dewaele, are set to appear on the Friday (11 September).
They will first play the main stage as Soulwax in the evening, before swapping guitars for headphones to spin as 2ManyDJs in the Big Top at night.
Speaking about today’s confirmations organiser Rob Da Bank said: "2manydjs are without a doubt my favourite DJs in the world, and it’s been donkeys years since they last played Bestival so I’m well chuffed they’re coming back to smash the hell out of the place!
"Not only that but they’re also donning their white suits and rocking out on the main stage in their alter egos Soulwax – now that is doubly exciting and possibly the only chance you’ll get to see Soulwax live in the UK this year!"
They join Kraftwerk and Massive Attack, who will headline the event which has won the Best Medium Festival at the UK Festival Awards three times.
Other names on the bill include MGMT, Fleet Foxes, Seasick Steve, DJ Yoda, Passion Pit and many more.
As previously reported the fancy dress theme will be Outer Space and it will include Blastival, a fiery spectacle that blends pyrotechnical pleasures with street theatre.
Bestival 2009 will take place at Robin Hill Country Park, Newport on the Isle Of Wight from 11-13 September.
Tickets are on sale now priced at £140 for the weekend.