The artist formerly known as Declan MacManus will play the Big Top at this year's Galway International Arts Festival on July 15 before travelling east to to entertain the Dublin crowds the following day.

Costello joins John Grant (July 9) and Wilco, with support Lucinda Williams (10) and Richard Hawley (22) on the already impressive bill of acts announced for the Iveagh Gardens this summer.

More Galway Arts festival acts are due to revealed over the coming weeks with Bell X1 already gearing up for their show on July 16.

Tickets for both events are available from Ticketmaster this Friday March 4.