What makes The Fly by U2 notable?

'The Fly' became a cultural touchstone, reaching number one in several countries and receiving significant airplay. It was pivotal in establishing U2 as leaders of the alternative rock scene in the '90s while earning critical acclaim for its innovative sound and approach. Released on October 1, 1991, 'The Fly' marked U2's artistic reinvention following their commercial peak with 'The Joshua Tree.' This single was part of the band's shift towards a more experimental sound, setting the stage for their album 'Achtung Baby,' which would redefine their identity in the early '90s.