If you've never seen it, I highly recommend getting the DVD, "Roy Orbison and Friends, A Black and White Night".
Broadcast in January 88 on HBO, it was filmed at the Ambassador Hotel's Coconut Grove nightclub in LA, taped in September 87.
The back-up band was the TCB Band, Elvis' band from 1969 until he croaked on the pooper in 77: Glen D. Hardin on piano, James Burton on lead guitar, Jerry Scheff on bass, and Ronnie Tutt on drums.
Male and female vocalists/performers included: Bruce Springsteen, Tom Waits, Elvis Costello, Jackson Browne, J.D. Souther, Steven Soles, K.D. Lang, Jennifer Warnes, and Bonnie Raitt.
The special was filmed entirely in black and white, and visually, is one of the coolest "concert films" I've seen.