Mason Jones (1919–2009) entered the Curtis Institute of Music in 1936 as a French horn student of Anton Horner, attending Tabuteau’s ensembles classes for two years before joining the Philadelphia Orchestra as third horn. Two years later, he was appointed principal horn where he remained until 1978 except for a five-year hiatus as principal horn of the United States Marine Band. He joined the Curtis faculty in 1946 and stayed for 49 years, coaching brass ensembles, conducting, and guiding two generations of young horn players, many of whom joined him in the Philadelphia Orchestra. In an interview with Melissa Stevens , Mason Jones reported the following in regards to the Tabuteau System.