American Ballet Theatre would have been celebrating its 80th anniversary onstage this spring, during its season at the Metropolitan Opera House. Instead, it celebrates with a pre-recorded gala, streamed on YouTube from seven to eight P.M. E.S.T., on May 12. The program, in dancer’s lingo, is “all over the place.” It includes historical footage, some new works performed by ABT dancers in safe spaces, and toasts from, among others, Katie Couric, Jennifer Garner, Kelly Ripa, Renée Elise Goldsberry, Julianna Margulies, Margaret Qualley, Chita Rivera, Deborah Roberts, Liev Schreiber (can’t wait to hear what he has to say!), Al Roker, Nate Berkus, Jeremiah Brent, Brian Stokes Mitchell, Julio Bocca, Roberto Bolle, Alessandra Ferri, and Carla Fracci. There’s also an online auction of virtual experiences and one-of-a-kind items. —L.J.