Every so often, the tectonic plates of mainstream musical taste shift. In the 1960s, there was the British Invasion, followed by disco in the 1970s and the rise of glam metal in the 1980s. The 1990s saw the advent of grunge and the resurgence of boy bands, followed by hip-hop’s hegemony in the 2000s....

LAS VEGAS — Steve Wynn, the 70-year-old casino magnate, stood before an invitation-only crowd at the opening of a Japanese restaurant here last week, promising good food and even better music. “Tonight we’re very lucky,” Mr. Wynn said, flashing his trademark grin. “Afrojack is here.” He...