Starting in Virginia City, Nevada and rippling out to the Haight-Ashbury, LSD reshaped popular music.
Fagen talks about how the Steely Dan songwriting strategy has changed over the years, and explains why you don't hear many covers of their songs.
The Guns N' Roses rhythm guitarist in the early '90s, Gilby talks about the band's implosion and the side projects it spawned.
The trail runs from flying saucer songs in the '50s, through Bowie, blink-182 and Katy Perry.
Just like Darrin was replaced on Bewitched, groups have swapped out original members, hoping we wouldn't notice.
Rickie Lee Jones on songwriting, social media, and how she's handling Trump.