Sonata Op. 75 by Charles Koechlin
For two flutes
Published by Masters Music
Besides being a composer, he also taught and wrote books on music. Known for being highly eclectic in inspiration, this early 20th Century French composer was also into musical technique. This duet was written between 1918 and 1920, and offers three movements. They are: Assez lent, Allegretto scherzando and Final.