Lynn L. Petersen is a composer, arranger, pianist, organist and music educator. Petersen earned a Ph.D. in Music Theory and Composition from the University of Minnesota, a Master of Church Music degree from Concordia College-River Forest, and a B.S. in Elementary Education from Dr. Martin Luther College. Her composition teachers have included Dominick Argento, Paul Fetler, Richard Hillert, Carl Schalk, and Gregory Yasinitsky (jazz).
Dr. Petersen has composed and arranged music for orchestra, band, jazz ensemble, chamber ensembles, choir, voice, piano, organ, and music for liturgy and worship. Her jazz chart Three Way Stop was recorded by the Washington State University Jazz Band and released in 2012 on Zoot Suit (WSU Recordings). Four Songs for soprano and violoncello, based on poetry by Ed Noonan, was commissioned by Diagenesis in 2011 and performed in Helena, St. Paul, Chicago and Boston. She was commissioned by Carroll College to compose Patterned for Thee, a song cycle based on the poems of the late Sister Annette Moran, for the college's Centennial in 2009. Other grants and commissions include the American Guild of Organists, Montana State Music Teachers Association, Myrna Loy Center, Yavapai College Symphony Orchestra, and the University of Minnesota and Jerome Foundation. Her compositions are published by Augsburg Fortress, Concordia Publishing House, GIA Publications, Northwestern Publishing House, and Pelican Music Publishers.
Dr. Petersen is a Professor of Music at Carroll College in Helena, Montana, where she has taught since 1999 and served as Chair of the Fine Arts Department 2008-2011. Her teaching areas include piano, composition and jazz. She has also taught at St. Olaf College, the University of Minnesota, and St. Cloud State University, and she has held church music positions in the Twin Cities and Colorado Springs. She has over thirty years of experience teaching and performing and frequently serves as an adjudicator at music festivals. She has remained active as a pianist and organist, and has sung in school, church, and community choral groups for many years.