Oprah Winfrey may have retired from day time TV, but she can still get the superstars to reveal all.   Reba McEntire will appear on Oprah's Master Class, a series in which "modern masters," including musicians, actors, athletes, philanthropists and business professionals, discuss their successes, failures, triumphs, heartbreaks—and, most important, the lessons they have learned on Oprah's OWN network.   Reba will talk about the heartbreak that is still with her after tour manager Jim Hammon and seven members of her road band (Chris Austin, Kirk Cappello, Joey Cigainero, Paula Kay Evans, Terry Jackson, Anthony Saputo and Michael Thomas), plus pilot Donald Holmes and co-pilot Chris Hollinger, were killed when their chartered jet plane crashed near San Diego, Calif., on March 16, 1991.  "It killed everyone on the plane," Reba tells Oprah.  "I really thought it was over."   Reba was supposed to be on the ill-fated flight, which went down en route from San Diego, Calif., to their next gig in Fort Wayne, Ind.    Reba dedicated her next album, 'For My Broken Heart,' to those who were lost.  Since the album came out that same year, Reba has rarely spoken of the accident, until now.    Reba is not the only superstar to appear on Master Class.  Goldie Hawn,Jon Bon Jovi and athlete Grant Hill are just a few others who will be featured on this second season of the show.   Read more here.   Oprah's Master Class makes its second season debut Sunday night at 8pm on OWN.   She'll be getting the scoop from actress Jane Fonda.  Reba's show air date has not yet been announced.