50s = Buddy Holly and Pat Boone

60s = Bob Dylan and Yummy Yummy Yummy I Got Love in My Tummy

70s = Stan Rogers and anything disco

80s = Paul Simon's Graceland and Willie & Julio's To All the Girls I Loved Before

90s = Tom Russell's Man from God Knows Where and Billy Ray Cyrus's Achy Breaky Heart

00s = Bruce Murdoch's Matters of the Heart and Janet Jackson's Boob

I'd say there was great stuff and crap in every decade.