For 40 years, KISS has been enthralling fans with its hard-rock sound, over-the-top look and pyrotechnic shows. The band, which was recently inducted into the Rock and Roll Hall of Fame, is the subject of "CNN Spotlight: KISS," which premieres Friday, May 2 at 10:30 p.m. ET. We look back at the band over the years. Left to right, Paul Stanley, Peter Criss, Gene Simmons and Ace Frehley pose for KISS' first album in 1974.