The UNM performers were joined by an Italian guest conductor, Stefano Vignati, and soloists Ilaria De Francesco, soprano; Laura Brioli, mezzo soprano; Gian Luca Pasolini, tenor; and Mirco Palazzi, bass. "We record all our performances for archival purposes, but because of the special guest artists and the combination of the chorus and concert choir, we used eight microphones to capture the event. The sound quality is exceptional, especially for a live performance," Ellingboe said.