He taught percussion, and directed the Percussion Ensemble, Marimba Ensemble and Jazz Ensemble II at UWEC for 32 years. (1969-2001) Mr. Keezer is a composer with publications through Kendor Publishing and Really Good Music, LLC. and has a Drum Set Video through the University of Wisconsin Press. He is a conductor, adjudicator, clinician for Ludwig Drum Co. and Sabian Cymbals, Ltd. and an author of a wide variety of articles for various music periodicals.