(Michael Abrams/Stars and Stripes)

Cologne, Germany, August 1991: Kurt Cobain of Nirvana, onstage at the Rhein Rock Fest. The band — still relatively unknown at the time — got caught in traffic on its way to the Tanzbrunnen outdoor concert hall and missed its performance slot, so the promoters cut other sets and gave Nirvana 25 minutes to play. The following month, “Nevermind” — with its single, “Smells Like Teen Spirit” — was released, and Nirvana was one of rock’s top acts until Cobain’s suicide in April 1994.