Choral director Simon Carrington and members of his Simon Carrington Chamber Singers join their voices to those of 32 elite high school vocalists in an “open rehearsal” of works by Frank Ticheli, Cesar Carrillo, and Matthew Harris. This is the third year Carrington and members of his ensemble have held a master class for young performers, but the first time the students have sung with the professionals. Carrington is a founding member of the King’s Singers and from 1974 to 2001 was director of choral activities at the University of Kansas. With his Chamber Singers he has recorded the CD Go Song of Mine.