Tickets for the fourth Witnness festival went on sale on Friday morning at 8am.

The latest acts to be confirmed are Calexico, Ed Harcourt and Ladytron.

Other artists that will be performing include Coldplay, Badly Drawn Boy, The Cardigans and Nightmares on Wax with more to be announced.

The festival will take place on Saturday 12 and Sunday 13 July at Punchestown Racecourse, subject to license.

Ticket prices: One day - €59.50 Two day - €109.50 Two day with camping - €130.50