Or as Pete says --
Attn singers. I mean it. ALL singers should watch this. Music starts at 5:45, the occasional cheesy '80s video interspersed with breathtaking (in more ways than one) footage of them singing together in the studio.
I loved that album at the time, but after watching this, I'm less enthused; the production seems dated to me, which kinda caught me by surprise. The Paul McCartney-penned "On the Wings of a Nightingale," however, remains transplendent.