Roisin Ingle, writer and lifelong U2 fan, and Sophie Shirley, former teacher at Mount Temple School in Clontarf, tell Oliver about the birth of U2!

<p>Roisin Ingle, writer and lifelong U2 fan, and Sophie Shirley, former teacher at Mount Temple School in Clontarf, tell Oliver about the birth of U2!</p>

Oliver Callan charms the nation with the best of entertainment, trending topics, sports, the arts and everything in between - all with a touch of craic.

<p>Oliver Callan charms the nation with the best of entertainment, trending topics, sports, the arts and everything in between - all with a touch of craic.</p>

Oliver Callan charms the mood of the nation, discusses trending topics, the latest in sport, the arts and everything that's hopping in Irish life! Listen live Monday to Friday at 9am on RTÉ Radio 1.