Diana Ross was the first modern pop diva, a benchmark of haughty elegance that laid the path for Whitney, Mariah and Christina. Her front-and-center attitude could be trying; she constantly overshadowed fellow Supremes Flo Ballard and Mary Wilson and demanded top billing in the trio's final years. Still, you couldn't argue with the results (twelve No. 1 singles) or with her voice; her role as one of soul's finest singers has rarely been questioned. Her solo career yielded more hits, duets with Marvin Gaye and Lionel Richie, and a few movie roles. Ross comes to town with her More Today Than Yesterday tour, which promises an overview of her 50-year career as well as extravagant costume changes and stage sets.