You’ll notice classics like “Smoke on the Water,” “Iron Man,” and “Enter Sandman” missing. And don’t forget the sweet ones: “Sweet Child O’ Mine,” “Sweet Home Alabama,” and “Sweet Emotion.” One could ...

If you wanted to assemble a time-lapse movie of rock 'n' roll's development, you could begin by illustrating the way riffs have often defined rock's great songs and performances. Elmore James kicked ...