The Regent Theatre will present rock opera superstars Yvonne Elliman & Ted Neeley, in concert, singing their biggest hits from “Superstar,” “Tommy,” “Saturday Night Fever,” and more—and backed by a dynamic band of all-star Boston musicians. The shows, which are EXCLUSIVE appearances world-wide, will rock the Regent on Friday and Saturday, September 17 and 18 at 8 pm; doors open at 7:00 pm.