Dr. Susan Quigley-Duggan teaches applied voice, learning to sing, vocal repertoire, vocal pedagogy diction, opera and musicals, movement for the singer and directs the opera workshop. She has performed roles in opera, musical theater, and appears as a soloist in recitals, concerts and oratorios. She is also a stage director opera, operetta, and musical showcases. She has directed for Quisisana Resort, UConn, Connecticut Opera Express, Opera of New England and Central Methodist University.

She has performed major roles in La Duenna, La Boheme, Le Nozze di Figaro, Cosi Fan Tutte, Signor Deluso, Carmen and Gianni Schicchi among others. She has directed major works s and opera scenes programs such as Trouble in Tahiti, The Marriage of Figaro, The Magic Flute, La Vera Constanza, La Divina, The Impresario, Amahl and The Night Visitors, and The Flower and the Hawk. She has directed eight of Gilbert and Sullivan full operettas.

Dr. Duggan's students have been winners of MTNA, Career Bridges and Amici competitions in Connecticut and Missouri. Recently her vocals students were first place winners of their divisions at the Central Regional NATS Competition and MMTA in the Fall 2015; were first and third place division winners in the KC NATS competition in Spring 2015, and in the Fall of 2014 at the MO State NATS. In 2014, her vocal student was selected as alternate of the Young Artist Vocal competition for MTNA.

She adjudicates for NATS, MMTA, MHHSA and Federation of Music Clubs in the state. She has performed recitals and given master classes at Columbia College, MSU, MU, Lincoln University, UCM, St. Charles, and CMU and State Fair Community College.

She was the director for CMU Opera Workshop presentations of Mozart's the Impresario in Summer 2014, Mozart's The Magic Flute in Winter 2015, and Mozart's Così fan tutte in Summer 2015 and The Marriage of Figaro in 2014.