I would say that the best decade for music was 1965-1975 (give or take a few years on each side). The over-engineered drivel produced by today's "talent" will never be played 60 years from now. Watch the commercials targeted at today's 18-35-year olds. Pay attention to the music.
I gotta be honest, I don't watch a whole lot of TV. But, I have noticed that a lot of the music from YouTube ads is classic rock. Which is great, but I'm just yearning for the day they use 1980's hard rock to hype something up.