The pandemic halted the Washington Ballet’s 2019-2020 season at its peak, just weeks before the company was set to perform Swan Lake. Now, the ballet is welcoming audiences back with their 2021-2022 season opening performance. The 75-minute program will include staples of classical repertoire such as a pas de deux from “Diana and Acteon,” loosely based on the myth of the Roman goddess of the hunt Diana and the hunter Acteon. The duet’s triumphant tone is accompanied by more contemplative modern pieces, such as excerpts from Jessica Lang’s “Reverence.” The ballet, set to Robert Schumann’s “Symphonic Etudes Op. 13,” felt nostalgic and wistful when the Washington Ballet last performed it in October 2019 at the Sidney Harman Hall. In a pandemic, that feeling is magnified by the dancers’ interconnectedness, with several sometimes working together to lift another individual. The performance will also include new works created by company members—fitting for an occasion hinting at the company’s future. Oct. 21 and 22 at the National Building Museum. $80–$110.