Having made his Metropolitan Opera debut in 1986, Mr. Wentzel went on to perform numerous roles at the MET while maintaining a significant presence in opera houses and with symphony orchestras across North America. Included in that list are performances with Calgary Opera, New York City Opera, Florida Grand Opera, Houston Grand Opera, Opera Theater of St. Louis, Santa Fe Opera, the Boston Symphony Orchestra, the National Symphony the Philadelphia Orchestra, Tokyo Philharmonic and the Orchestre Symphonique de Montréal both in Montreal and Carnegie Hall with whom he recorded Berlioz' L'Enfance du Christ.
Mr. Wentzel has recorded with the Montreal, Milwaukee and National Symphonies and with the Spoleto Festival in Italy as well as with the Opera Theatre of St. Louis and Glimmerglass Opera.
He has been at the University of Tennessee since 1996, where since his arrival he has revitalized the Knoxville Opera Studio, attracting talented young singers to gain on the job training in the professional setting. Mr. Wentzel joined the Janiec Opera Company as a part of the Brevard Music Center in the summer of 2013, and has also worked with young artists at many summer apprentice programs. Well known as an adjudicator, Mr. Wentzel has regularly served as a judge for Metropolitan Opera auditions throughout the country. At home in Knoxville, for the past 18 years he has served as the official Anthem Man for the University of Tennessee, having performed the national anthem for over 8 million people to date.