Children’s troupe holding auditions

The Alexander Children’s Theater School is holding auditions for roles in the musical “Once on This Island.’’ The auditions, by appointment only, for performers from age 10 to 19 will take place Friday and Saturday at the Emerson Umbrella Center for the Arts, 40 Stow St. The show will be performed May 30 through June 1. For more information, call 781-899-4467 or visit www.acts1.org.