CIRCA 1975: (L-R) Dougie Thomson, Bob C. Benberg John A. Helliwell, Roger Hodgson and Rick Davies of the rock band "Supertramp" pose for a portrait in circa 1975. (Photo by Michael Ochs Archives/Getty Images)
American Disco and R&B singer Donna Summer (born LaDonna Gaines, 1948 – 2012) performs onstage at the Poplar Creek Music Theater, Hoffman Estates, Illinois, July 12, 1983. (Photo by Paul Natkin/Getty Images)
From left to right, Gary Moore, Phil Lynott (1949 – 1986) and Brian Downey of Irish rock band Thin Lizzy in London, 1973. (Photo by Michael Putland/Getty Images)
American Rock musician Robert Fleischman performs onstage at the Aragon Ballroom, Chicago, Illinois, April 26, 1979. (Photo by Paul Natkin/Getty Images)
American musician Kenny Rogers performs at the Rosemont Horizon (later renamed the Allstate Arena), Rosemont, Illinois, April 12, 1986. (Photo by Paul Natkin/Getty Images)