Over the past four decades, Roger has presented over 100 hundred lectures and workshops on a variety of topics, including these titles:
Since 1972, Roger has presented scholarly papers or presentations at:
American Musicological Society (national/regional meetings)
Communal Studies Association (national meetings)
Dublin Seminar (New England region)
Maine Statehood Conference
Religious Folk Art Conference in New York City
Society for American Music (national meeting)
Also, he has been a consultant for such institutions as the National Geographic Society in Washington, D.C. ("The Music of Tonga"), and the Paul Revere House in Boston ("Music in Colonial America").