Questlove's newest documentary features interviews and clips from 50 years of musical performances on Saturday Night Live.

The startling “cold open” for a documentary about 50 years of “Saturday Night Live” music is proof that a musician ... like R.E.M. and Morris Day, Rick James and Duran Duran, Hanson and Cher.

Tune into the Oct. 11, 1975 premiere episode of ''Saturday Night Live'' — then without ''live'' in its name — and you may be instantly surprised at some of the bones of the show that are still intact ...