‘Sweet Charity.’ With music by Cy Coleman, lyrics by Dorothy Fields and book by Neil Simon, this classic Broadway musical focuses on a struggling taxi dancer at a Times Square dancehall. 7:30 p.m. today, 2 p.m. Sunday. Rollins Studio Theatre, Long Center for the Performing Arts, 711 W. Riverside Drive. $15-$25. 474-5664, www.thelongcenter.org.