Can you try out if you are not a music major/minor?
It says on the website that Ralph Guzzi is the director. I would reach out to the Pitt department of music to get information on how to audition for this ensemble or how to contact Ralph Guzzi.
phone 412-624-4186
email musicdpt@pitt.edu
information on all ensembles
https://www.music.pitt.edu/performance-and-lecture-series/ensembles
audition information from last year (but might be helpful for you)
https://www.music.pitt.edu/news/2018-ensemble-auditions-and-sign-ups