William Marsden received a Bachelor of Music and a Master of Music from the University of Missouri - Kansas City Conservatory of Music, where his teacher was Joanne Baker. He subsequently did doctoral studies at the University of Houston under internationally renowned pianist, Abbey Simon. While a student at UMKC, he received Piano Performance Achievement Awards at both the undergraduate and graduate levels. He has performed concertos with several orchestras including the Utah Symphony, Kansas City Symphony, Jefferson City Symphony, as well as the Brigham Young University Philharmonic Orchestra, Kansas City Conservatory Orchestra and University of Houston Symphony Orchestra. He has performed solo recitals in the United States and Asia.

Mr. Marsden's awards and accomplishments include First Prize in the Utah State Fair and Utah Music Teachers Association piano competitions; quarter finalist in the Gina Bachauer International Piano Competition; and participant in the renown Walter Naumburg Competition. Reviewers have praised his playing as "infused with the sort of imagination and color that simply cannot be taught. Superb." He has been Company Pianist and Music Director of the Kansas City Ballet since 1999. He was formerly a Company Pianist with the Houston Ballet and the Head of Keyboard Studies at Tuacahn Center for the Arts. He lives in Independence, Missouri with his wife, Rhonda, and daughter, Heather.