Rex Features
Other artists added to the bill include Amy Macdonald, Ben Folds, The Metros, Bryn Cristopher, Little Man Tate, Elliot Minor, Joe Lean and the Jing Jang Jong, and Alphabeat.
Further new additions include The Hold Steady, Eddy Grant, We Are Scientists, Glasvegas, David Jordon, The Script and Jack Penate.
Oxygen takes place at Punchestown Racecourse, Naas on July 11, 12 and 13.
This year's headliners are Rage Against The Machine, The Verve, REM, Stereophonics and Amy Winehouse.
