The startling “cold open” for a documentary about 50 years of “Saturday Night Live” music is proof that a musician — a specific kind of musician — had to put it together.
It's a mashup of performances from artists that few people would think of putting together, like R.E.M. and Morris Day, Rick James and Duran Duran, Hanson and Cher. Filmmaker Ahmir “Questlove” Thompson's experience as a DJ taught him enough about beats per minute and musical keys to meld things seamlessly.
