Charles-Marie Widor, renowned for his talents as organist and composer, was also a professor at the Paris Conservatoire. During his tenure there, he wrote this study of instrumentation, which he viewed as a supplement to BerliozÂ's celebrated but dated treatise on the same subject. Full of insights and details not found in other manuals of instrumentation, WidorÂ's text exhaustively catalogs the various abilities and qualities of all the orchestral instruments and offers an abundance of practical advice regarding instrumental combinations and relevant works to study. This classic work is an invaluable reference for any student of orchestration.