Walden Moore graduated from the Institute of Sacred Music and School of Music in 1980, after organ studies with Robert Baker and Gerre Hancock. Since January of 2007, he has been team-teaching a course in service playing with fellow Baker student Mark Miller. In 2024, he retired from Trinity Church, New Haven, where he served as Director of Music for 40 years, working with the renowned Choir of Men and Boys, the Choir of Adults and Girls, and the parish mixed-adult choir in a regular schedule of parish services and outside appearances. He is past chair of the Music Commission of the Episcopal Diocese of Connecticut and has served on the Executive Board of the Connecticut Chapter of the American Choral Directors Association. He currently serves as a member of the Board of Directors of The Royal School of Church Music in America and on task forces in both the RSCMA and the American Guild of Organists.

For the 2025–2026 academic year, he will be Interim Co-Director of Chapel Music at Yale and is Visiting Professor of Organ at Wesleyan University for the Fall 2025 term. He has served as clinician, guest conductor, and organist for choir festivals across the nation and has also served as consultant in organ design for several churches in Connecticut.

Moore received his bachelor's in music from University of Kentucky and his master's in music from Yale University.