Consistently voted one of the greatest Irish songs of all time, Horslips' Dearg Doom was released April 1973. Johnny Fean's guitar riff, inspired by the old Irish trad tune Chief O'Neill's March, is instantly recognisable. A short clip of it features in this advert for the McMór by McDonalds which aired in 2014.

Written by Carr/Devlin/Fean/Lockhart/O'Connor

Published by Crashed Music

Client: McDonalds

Agency: Cawlea Nea/TBWA

With thanks to Paul Ellis @ Brilliant Productions