All three acts will join Morrissey, Beck and The National on Friday, July 4 at London's Hyde Park. Others added to the bill include Lightspeed Champion and New York Dolls.
O2 Wireless takes place on July 3-6. Tickets are on sale now. No acts playing Thursday, July 3 have been announced yet.
Fatboy Slim will headline the Saturday night following performances from Robyn, Mark Ronson, Sam Sparro and the Whip.
Counting Crows round off the bash on Sunday alongside the Goo Goo Dolls, Powderfinger, The Hold Steady and Bowling For Soup.