Singers and instrumentalists in Upper School have been tirelessly rehearsing for a lively winter concert on Wednesday, December 12 at 7 p.m. in the Muller Auditorium. The audience will be treated to music spanning five centuries and from every possible genre. The concert will feature all Upper School performing ensembles: Chorus, Chamber Singers, A Cappella, Orchestra, Concert Band, Jazz, Band and Strings.