"Bohemian Rhapsody" by Queen

It seems oddly appropriate for Hallowe'en that Bohemian Rhapsody was released this day, seeing as it is itself an opera disguised as a pop song...

Despite being released as long ago as 1975, it also has a video; this, then, must surely count as one of the earliest music videos, as it was created specifically for promotion (and not merely excerpted from some program or other, like a lot of the available musical performances from the 1960s and 70s).

It's name doesn't appear in the lyrics, it's got no chorus but more bridges than Venice, and the lyrics may or may not contain some cryptic meaning; nevertheless it is consistently cited as one of the greatest pop songs ever. Like the bumblebee - that shouldn't be able to fly, yet does - Bohemian Rhapsody soars on Freddie Mercury's vocals and is kept aloft by Brian May's prototypically head-banging guitar riffs alike.
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