What year is it again?

Over the weekend, Queen's Greatest Hits went to number 1 on iTunes. Joni Mitchell's "Blue" is number 2.They are from 1981 and 1971, respectively.  I was 16 in 1973, I'm trying to imagine music from 1923 and 1933 suddenly being popular. And I can't. ABBA, Journey, and Fleetwood Mac are also in the top 50. But HER Music's first album, released last week, is a dud. And it shouldn't be. Go figure.