"Wire" is about the dangers of heroin use. U2 stayed mostly drug-free, but they had many friends who became addicted, including Phil Lynott from Thin Lizzy, who died from heroin abuse in 1986. U2 bass player Adam Clayton was arrested in Ireland for marijuana possession in 1989, but the conviction was waived in lieu of a donation to charity.
This was one of the first U2 songs produced by Brian Eno, who had worked with David Bowie and Talking Heads. Eno went on to produce The Joshua Tree and Achtung Baby.
U2 would revisit the theme of heroin abuse later on the album with "Bad" and on The Joshua Tree with "Running To Stand Still."
This was the first of four U2 songs used in the TV series Miami Vice. It appeared in the season 1 finale "Lombard" in 1985.
George from Trenton, OhAnother Irish band called Them (which featured Van Morrison) wrote a song called "Gloria" as well, but the music and lyrics of that song and U2's "Gloria" are vastly different. However, U2 quoted Them's version during the song "Exit" in the "Rattle & Hum" film.
Angela from Hagerstown, Mdit's not played on the radio because it's from 1984 and not a single.
Mike from Emmaus, PaWhy isn't this song played on the radio???? It's one of U2's best songs.
The Boyz II Men hit "It's So Hard To Say Goodbye To Yesterday" is an a capella cover of a song from 1975 by G.C. Cameron that was used in the movie Cooley High to express the feeling of parting ways with high school friends.