GARDELL SIMONS: _Trombone_, was born at Allegan, Michigan. He began the study of the trombone at the age of nine and a few years later commenced a systematic course of study in Chicago. Since it was difficult at that time to get instruction of a high order from Trombonists he relied mostly upon singers and instrumentalists of repute for his instruction in breathing, phrasing, articulation and expression, and at length became one of the originators of the Modern School of trombone playing; also studied harmony and composition to some extent. Played first trombone with Philharmonic Orchestra, New York City, Arens “People’s Symphony,” Volpe Symphony and others. Wide experience as soloist with concert bands and concert companies, etc., and plays mostly his own compositions or violin music adapted by himself to the trombone. _Engaged for Philadelphia Orchestra 1915._ DANIEL MAQUARRE: _First Flute_, 1910-1918, was born in Brussels. When five years old he began the study of music in Paris, and in 1893, entered the National Conservatory of Paris to study flute and harmony; in 1896 he won the first prize for the flute. Toured in the United States as soloist with Mme. Emma Nevada in 1901, and was for two years soloist with Longy Club, of Boston. In 1902 became member of the Boston Symphony Orchestra, where he remained for seven seasons; also one season with New York Philharmonic. Organized the D. Maquarre Ensemble of Instruments in fall of 1913 in Philadelphia. _Engaged for Philadelphia Orchestra 1910._ ANDRÉ MAQUARRE: _First Flute_, 1918-1910, was born in Brussels. Began his musical studies at the age of eight at the Paris Conservatory, with Solfeggio and Piano under Martini, also studied Harmony with Landon, Flute with Henry Altes and Composition with Massenet. Played in several orchestras in Paris, also Opera. Joined the Boston Symphony Orchestra in 1898 as solo flute, and from 1906-1917 was conductor of the Boston Symphony Orchestra during the period of the “Pop” Concerts season at Symphony Hall. Wide soloist experience in Symphony orchestras, chamber music organizations, also obligato with singers, such as Melba, Gilibert and others. Founded the Maquarre Sextet in Boston in 1901. Composed three operas and a number of orchestral pieces in Symphonic form, an overture played by the Boston Symphony Orchestra; and chamber music for wind choir and songs. _Engaged for Philadelphia Orchestra 1918._