William H. Rehrig, the son of a professional trumpet player (Harold Rehrig, the Philadelphia Orchestra), and an amateur violinist (Caroline D. Rehrig, the Germantown (Philadelphia) Symphony and the Leeds Srting Quartet), earned Bachelor's and Master's of Music Education degrees from Pennsylvania State University and taught instrumental music from 3rd grade through high school in Baltimore County for more than 40 years. He is the author of the standard reference book in the band field, "The Heritage Encyclopedia of Band Music", which was originally published in 1991, and is currently being updated and developed as a website. He is a member of the trumpet section with the Virginia Grand Military Band, a semi-professional concert band, and is the founder of The Grand Band Companion, a band history newsletter.
Mr. Rehrig was elected into associate membership by the American Bandmasters Association. He is repertoire advisor to the New Holland Band and the Shore (Monmouth County, New Jersey) Concert Band. He also is curator of the New Holland (Pennsylvania) Band Museum. He is included in the Millenium Editions of "Who's Who in America" and "Who's Who in the World". He is active as a performer on cornet and trumpet, and has played with a number of fine groups including the Pennsylvania State Army ROTC Band, the Ocean Grove Municipal Band, The East Stroudsburg Community Band, the New Holland Band, and the Germantown Symphony Orchestra.