Directed by Larry Sousa with choreography by Susan Chebookjian, performances are scheduled to continue through Aug. 14.

The musical stars Patrick Cassidy (42nd Street, Aida, Annie Get Your Gun) as the Captain and Sarah Pfisterer (Phantom of the Opera, Show Boat) as Maria.

They are joined by Susan Scannell as Elsa Schraeder; Rick Sherburne as Max Detweiller; Jenny Lynn Stewart as the Mother Abbess; Gillian Gordon as Liesl; and James Forbes Sheehan as Rolf. The Von Trapp children are Andrew Purdy, Friedrich; Isabelle Miller, Louisa; Troy Costa, Kurt; Victoria Blanchard, Brigitta; Natalie Hall, Marta; and Emma Schaufus, Gretl. Supporting players include Linda Lodi (Frau Schmidt), Margaret Felice (Sister Berte), Angela Richardson (Sister Margaretta), Connell Benn (Sister Sophia), Brad Walters (Franz), Tim Lawton (Herr Zeller) and Jim Kopycinski (Admiral Von Schreiber). An additional 25 singers and dancers fill out the ensemble supported by a full, live pit orchestra.

Daniel Rodriguez and Jeffrey Leonard serve as music director and conductor, respectively.

"When postulant Maria proves too high-spirited for the religious life, she is dispatched to serve as governess for the seven children of a widowed naval Captain. Her growing rapport with the youngsters, coupled with her generosity of spirit, gradually captures the heart of the stern Captain. When Austria has been invaded by the Nazis, who demand the Captain's immediate service in their navy, the family makes a narrow escape over the mountains to Switzerland on the eve of World War II," according to press notes.

The Reagle Music Theatre is located at 617 Lexington St. in Waltham, MA. For more information and tickets, call (781) 891-5600 or visit www.reaglemusictheatre.org.