Rock n Roll Grad School #204- The 501 Definitive Records of the '90s

What records define the '90s as a decade to be remembered? Is it
NSync? Nirvana? What about hip-hop?

Thankfully, music writer and editor Gary Graff is here to muddy
the water and start all sorts of disagreements with his new book,
"501 Essential Albums of the '90s: The Music Fan's Definitive
Guide," available November 5th from Motorbooks.