(written from a Production point of view)
Carr is an accomplished singer, and is well known for her singing in Robert Wise's The Sound of Music (which starred Christopher Plummer). She dubbed several of the children during their singing numbers and is also the sister of Charmian Carr, who played Liesl von Trapp in the movie. She also sang in Walt Disney's The Jungle Book, as did Clint Howard.
In 1976 and 1977, she was a member of the ABC Team on Battle of the Network Stars. John Schuck was also a member of her team in November 1976. Another DS9 guest star, Adrienne Barbeau was a member of the rival team, the CBS team. In February 1977 one of her teammates was LeVar Burton.