'Put 'Em Under Pressure' emerged as the official anthem of Ireland's national football team during their historic 1990 FIFA World Cup campaign in Italy. Produced by Larry Mullen Jr. of U2, a passionate supporter of Irish football, this track immediately transcended its sporting origins to become a cultural touchstone that united the nation during a period of significant social and economic transformation.

The song's composition demonstrates a sophisticated blending of cultural elements: the haunting opening vocals by Moya Brennan of Clannad establish a connection to traditional Irish music and the mythology of Ireland's mystic past, while the driving guitar riff—borrowed from Horslips' 'Dearg Doom' and itself adapted from the traditional "O'Neill's Cavalry March"—grounds the anthem in Ireland's musical heritage. The integration of the universally recognised "Olé, Olé, Olé" chant, originally a Spanish chant traditionally used as an exclamation of encouragement or appreciation, particularly in bullfighting and flamenco dancing, creates an accessible entry point for international audiences, while manager Jack Charlton's voice adds authenticity and personal connection for supporters.

The recording process itself embodied collective national participation, with the "Windmill Carpark Choir" of Irish fans contributing to the chorus—a symbolic representation of the deep connection between the team and its supporters. Released under Son label, part of U2's Mother Records, the single topped the Irish charts for 13 weeks, holding the record for longest-charting single in Ireland until 'Riverdance' in 1994.

Beyond its commercial success, 'Put 'Em Under Pressure' functions as a shared cultural narrative that captures a pivotal and mythic moment in Irish identity formation. The song represents a confident, outward-looking Ireland ready to make its mark on the world stage, while still honouring traditional cultural elements. Its enduring popularity at major sporting events demonstrates how effectively such cultural products can serve as repositories of collective memory and national sentiment.