Spin magazine has named U2's "Achtung Baby" (1991) the most influential album of the past 25 years.
It was an audacious album with a sound that was like nothing heard before. It was hard to believe that this was the same band that had released "The Joshua Tree" (1987) and "Rattle and Hum" (1988).
Much has written about the strife and near-breakup during the recording of "Achtung Baby". Suffice it to say that in the U2 mythology the hardship bore "One", perhaps the band's greatest song.