Musician John Cale's Move from the Avant-Garde to Rock and Roll

"In Lou Reed's world, when you were Lou's friend you knew it," his longtime publicist Bill Bentley tells Terry Gross. Fresh Air dedicates an entire hour to the transgressive and transcendent Velvet Underground co-founder, with music and commentary by original Velvets John Cale and Maureen Tucker.

Six years before his death in 2016, Prince recorded — but did not release — Welcome 2 America. Who knows why Prince opted to hide it away in 2010; this album's sound is very much of-the-moment.

Photographer Bob Gruen spent decades capturing the lives and performances of rock stars of the '60s, '70s and '80s, including John Lennon, the Rolling Stones, Chuck Berry, Tina Turner — and many more. Gruen put in many hours backstage, in studios and on the road, sometimes doing drugs and drinking until dawn with his subjects.