Dizzee Rascal has been added to the line-up for T4 on the Beach in Weston-Super-Mere.
Basshunter and One Night Only have also joined the bill for the event on July 4.
Alexandra Burke, JLS and Scouting for Girls are among the acts already confirmed for the event.
For more information and to purchase T4 on the Beach tickets, check out Gigwise Gig Tickets.
For more information about T4 On The Beach and all this summer's festivals, check out the Gigwise Festival Guide.
T4 On The Beach - The Best Bits