Rochester's Orchestra: A History of The Rochester Philharmonic Orchestra and Its Educational Programming 1922 to 1989, by William L. Cahn (TPB, 1989, $5, which is 1/3 the internet price.)
"It was Mr. Eastman's hope to educate and develop a large musical audience by combining the showing of superior motion picture films along with the presentation of the best symphonic music, including operatic scenes and the dance. He did not think that an appreciation for symphonic music could be developed overnight. It would take regular exposure for audiences to become accustomed to hearing it, and for children to grow up knowing it. To accomplish this he caused the Eastman Theatre Orchestra, an ensemble of approximately 70 players to be formed."
The theatre opened on September 2, 1922 with Tchaikovsky's 1812 Overture, followed by the movie The Prisoner of Zenda. "Thereafter, weekly programs continued to be presented, with motion picture programs (some with organ accompaniment) shown for six days and a concert performed on the seventh day, until the cessation of silent movie programs in 1929."
There is a lot more to learn here, and many photos to see. Look for this book in the local section, and enjoy! (Avail. 9/27)
