Master Classes
& Lectures

Terwilliger and Cooperstock give masterclasses, lectures and lecture-recitals across six continents

Global
Seminar

Opus Two directs an annual chamber music festival for American college students in France

Orchestral
Performances

Opus Two performs duo concertos by Mendelssohn, Haydn and others and perform individually as orchestral soloists

Professional
Organizations

Terwilliger and Cooperstock are active members of Music Teachers National Association, American String Teachers Association, and National Conference on Keyboard Pedagogy, among others

Opus Two
Hall

Opus Two regularly produces performances with guest artists in their space in Boulder, Colorado | more info

Teaching

William Terwilliger
Professor of Violin, University of South Carolina – School of Music

Andrew Cooperstock
Professor of Piano, University of Colorado Boulder – College of Music