In lieu of a fall season, American Ballet Theatre is premiering four new works during the broadcast of its Fall 2020 Gala. These ballets were created in quarantine bubbles at two locations in New York State, and the choreographers are Gemma Bond, Darrell Grand Moultrie, Christopher Rudd, and Pam Tanowitz. The gala streams on ABT’s YouTube Channel and on its Web site. —L.J.