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Conference Chair

Timothy Westerhaus is the director of choirs and vocal studies at Gonzaga University, where he also serves as music department chair. He is conductor of the professional chamber chorus, Spokane Kantorei. He serves as President of the Northwestern Region of the American Choral Directors Association, University/College Curriculum Officer of Washington Music Educators Association, and as member of the National Collegiate Choral Organization Board. He sings professionally as a tenor in the Oregon Bach Festival chorus, performs as pianist in recitals, and leads Baroque performances from the harpsichord. He is passionate about intercultural musical exchanges, fostering positive choral community, sparking imagination through innovative performances, advocating for singing among all ages and contexts, and engaging choral arts with contemporary, relevant issues of society and culture in communities.


President & Program Chair - July 1, 2021-2024

Steven M. Zielke, Director of Choral Studies at Oregon State University is the Patricia Valian Reser Professor of Music. At OSU, Zielke directs the OSU Chamber Choir, the OSU Meistersingers and teaches choral conducting. He earned graduate degrees from Florida State University, studying with Andre Thomas & Rodney Eichenberger, and received a B.M.E. from Friends University teaching music in the Kansas public schools. Choirs under his direction have appeared at regional and national conferences, including a 2015 performance at the National Collegiate Choral Association and three past Northwest ACDA conferences. He has also presented sessions at both regional and national conferences. Zielke is a past-president of the Oregon ACDA, artistic director for the Corvallis Repertory Singers, and is president-elect of the Northwest ACDA region.

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Past President

Brian is Professor of Music and Chair of the Department of Music at Pacific Lutheran University. He conducts the University Chorale. Before taking on his administrative responsibilities, he also conducted University Singers (SA) and Knights Chorus (TB), and taught undergraduate courses in Vocal Pedagogy for the Choral Music Educator, Choral Methods and Choral Literature. Brian is also a successful composer and arranger. His compositions are published by GalanteMusic, Walton and Colla Voce Music, have been performed by professional, collegiate, and advanced high school choirs throughout the United States and Europe, and have been recorded for commercial release by Delos, Centaur Records, and MSR Classic. He is the recipient of multiple ASCAP Plus awards, and a regular composer-in-residence for the Taylor Festival Choir (Charleston, SC). He is a member of the Northwest Choral Publishers. Brian has served ACDA as President of the Northwest Region (2018-2020), Program Chair of the 2010 and 2018 NW Region Conferences, Associate Conference Chair of the 2013 National Conference, Member of the National Technology Committee (2007-2011), and President of Louisiana ACDA (2001-2003). He remains an active member of the ACDA, National Collegiate Choral Organization (NCCO), the American Society for Composers, Authors and Publishers (ASCAP), Washington ACDA, and the Washington Music Educators Association.