John Cale

"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.

Cale was the violist, keyboardist and bassist of the 1960s avant garde band, The Velvet Underground. Since the breakup of the group in 1968, he has had a career as a solo artist. Most recently, he collaborated with former Velvet Underground member Lou Reed, on "Songs for Drella," the 1990 tribute to artist Andy Warhol. This past month, he released "Seducing Down the Door: A John Cale Collection," which is a compilation of his post-Velvet Underground solo recordings.

Rock historian Ed Ward discusses the musician's role in recent popular music. Before rising to prominence in the Velvet Underground, Cale studied with avant-garde composers like LaMonte Young.