11.   She loved music and loved to sing, a trait Abby inherited, and in high school sang in choral groups.

12.   These choral groups enable amateurs to produce something of near-professional caliber.

13.   They rehearse several times a week, much in the manner of an amateur choral group.

14.   Together, they directed a choral group in the town of Margaux, where he spent almost all his life.

15.   He went to the University of California at Santa Cruz as a piano major, where he also sang in two choral groups.

16.   She was brought to Japan as a baby and later trained in ballet and sang with choral groups on stage and radio.

17.   The vast lines of mourners snaking through the narrow streets were serenaded by choral groups singing songs in honor of Guevara.

18.   Ballet dancers performed the Nativity on stage in the square, backed by choral groups on a giant, illuminated grandstand in the form of a Christmas tree.