David Day has served as curator of Music Special Collections and Music and Dance librarian in the Harold B. Lee Library since 1986. He also teaches the graduate research methodologies course for the BYU School of Music.
He received a BA in music theory and an MA in musicology from BYU and an MS in library and information science from the University of North Carolina at Chapel Hill. He then went on to earn a PhD in musicology from New York University.
In addition to his university assignments, Brother Day currently serves as chair of the Bibliography Commission of the International Association of Music Libraries. Past positions in the same organization include founder and chair of the Subject Commission for Archives and chair of the Working Group on the International Registration of Music Archives. His research interests include music bibliography, ballet music, and the study of 19th-century music manuscripts. He loves working with students, especially participating in mentoring environments where students are given the opportunity to explore primary sources and develop their own original insights to music research.
Brother Day has served in many Church callings, including as a teacher, ward clerk, and ward librarian.