Book excerpt: Guide to the Tuba Repertoire is the most comprehensive investigation ever undertaken into the literature and discography of any single musical instrument. Under the direction of R. Winston Morris and Daniel Perantoni, this publication represents more than 40 years of research by dozens of leading professionals throughout the world. The guide defines the current status of the tuba and documents its growth since its inception in 1835. Contributors are Ron Davis, Jeffrey Funderburk, David Graves, Skip Gray, Charles A. McAdams, R. Winston Morris, Mark A. Nelson, Timothy J. Northcut, Daniel Perantoni, Philip Sinder, Joseph Skillen, Kenyon Wilson, and Jerry A. Young.