And the Curtain Rises is the third part of Signature's American Musical Voices Project, aimed at nurturing new shows. This valentine to musical comedy, a classic backstage comedy about the creation of the first American musical, is from Michael Slade, Joseph Thalken and Mark Campbell. Now playing through April 10. Signature Theatre, 4200 Campbell Ave., Arlington. Tickets are $54 to $80. Call 703-820-9771 or visit signature-theatre.org.