The Cal Poly Choirs: Cantabile, Chamber Choir, PolyPhonics and University Singers — will collaborate with the Cabrillo Madrigal Singers from Lompoc and the San Luis Obispo High School Choir. Each choir will perform a selection of music, as well as join with others for collaborative pieces. A Cal Poly Orchestra of 30 students and guests will perform with the choirs on several selections, and accompany festive carols for a singalong with the audience. Cal Poly’s popular a cappella groups Take it SLO and That’s the Key will sing a jazz arrangement of a Christmas song. Scott Glysson will conduct the Cal Poly Choirs, and University Organist Paul Woodring will accompany the choirs on piano and organ.