Queen didn’t really become Queen until they decided to fill their songs with the big operatic sounds, multilayered vocals and awesome guitar lines that made their music one of rock’s most recognizable and defining. There are tiny hints of all this on the band’s 1973 self-titled debut, but it’s their fourth album, 1975’s classic ‘A Night at the Opera,’ that ushered in a period of unbridled creativity that made Queen one of the planet’s most popular groups. By the time they made 1980’s ‘The Game,’ a worldwide No. 1 hit that spawned several hit singles, Queen were selling out stadiums and seemingly unstoppable. They made a soundtrack album for a cheesy sci-fi movie, they made tongue-in-cheek music videos and they experimented with sounds that signaled the early part of the ‘80s. In the mid ‘80s, singer Freddie Mercury contracted AIDS, which would take his life on Nov. 24, 1991.