‘Serenade.’ Austin-based American Repertory Ensemble offers its latest program of intimate ballet works danced to live chamber music. Selections include dances by worldrenowned choreographers Christopher Wheeldon and David Bintley along with a new piece by the ensemble’s artistic director, David Justin, which he created in celebration of his 20th wedding anniversary. Special guests from Joffrey Ballet Chicago are among the dancers. 8 p.m. today and Friday. Rollins Studio Theatre, Long Center for the Performing Arts, 701 W. Riverside Drive. $15-$27. www.thelongcenter.org.