Celebrating the 40th anniversary of the U2 single 'Gloria', originally released as a single in October 1981, the second single to be taken from U2's second studio album October. It remains a staple in U2's live set ever since.

This 40th anniversary limited edition EP includes the studio version of 'Gloria' plus three live versions from three different decades. The 1990s are represented by the Point Depot show on the band's home turf of northside Dublin (track A2). Although ticketed as 31st December 1989, the show started at midnight on 1st January 1990 and was broadcast across Europe at the time.

Side B contains two previously unreleased live recordings of 'Gloria' - recorded at the Fleet Center in Boston during the Vertigo tour in 2005, and at London's O2 Arena during the third night of their run of shows in the English capital as part of the Innocence and Experience Tour in 2015.