Sinead O'Connor will perform at this year's Galway Arts Festival, with special guest John Grant.

They'll play the Festival Big Top on July 23rd.

The pair have become good friends over the last few years, with O'Connor regularly appearing on stage whenever Grant plays Ireland. She covered his song 'Queen of Denmark' on her album 'How About I Be Me (And You Be You)?', and Grant invited her to sing on several tracks from his last album 'Pale Green Ghosts'.

Tickets are €39.50 and on sale this Friday, January 23rd.

The Galway Arts Festival runs from July 13th - 26th. Damien Rice has been already announced for the Festival Big Top on July 16th.