Trevor Herbert is Emeritus Professor of Music at the Open University and Research Fellow at the Royal College of Music, London. He was introduced to music in a brass band and went on to be a trombone player with major London orchestras and period instruments groups. He has written prolifically on the history of brass instruments, their music and players and is regarded as one of the world's leading experts on the subject. Arnold Myers is Professor Emeritus at the University of Edinburgh and Senior Research Fellow at the Royal Conservatoire of Scotland. He has worked in parallel as an information scientist and as Curator and Director of Edinburgh University Collection of Historic Musical Instruments. His research is at the interface of musical acoustics and the history of brass instruments. John Wallace was Principal of the Royal Conservatoire of Scotland from 2002–14. He began playing cornet aged 7 in the Tullis Russell Mills Brass Band in Fife, Scotland, and went on to become Principal Trumpet of the Philharmonia Orchestra and leader of his own internationally renowned brass ensemble, The Wallace Collection. His musical career has spanned performance, composition and education.