The Ting Tings, Alphabeat and Duffy are among new acts confirmed for next month's T4 On The Beach event.
The That's Not My Name stars will be joined by the Danish pop act and the Welsh chanteuse at the concert, Channel 4 has confirmed today.
Also set to take the stage in Weston-super-Mare on Sunday July 20th are Guillemots and Feeder, with the latter making their third T4 On The Beach appearance.
Tickets for the sixth T4 On The Beach, which also features the likes of Adele, the Pigeon Detectives and Sam Sparro, sold out in record time but those who missed out will be able to tune in to Channel 4 to watch the event live.
McFly, the Hoosiers and Scouting For Girls will also perform in the Somerset sun, while Lightspeed Champion's Dev Hynes will look to bounce back from recent health problems - including a dangerous foot infection and a troublesome facial abscess - is also confirmed to perform.
Following her recent UK tour, Robyn will be on hand with chart-topping hits such as With Every Heartbeat and Be Mine, while The Feeling, whose song Join With Us is used by event sponsors Toyota, are also on the bill.