The latest additions to this year's Witnness festival are dance acts Faithless and Zoot Woman and former Lemonhead's main man Evan Dando.
Additional Irish acts include The Waterboys, Ash and The Redneck Manifesto.
American acts And You Will Know Us By The Trail Of The Dead and Low have also been added to this year's bill.
Gemma Hayes, Pat McMellow and Ed Harcourt have been added to the Witnnes Rising line-up which provides a platform for emerging talent.
Witnness takes place over Saturday and Sunday of the August Bank Holiday weekend at Fairyhouse Racecourse.