In this rare photo, George Gershwin sits at the piano while legendary oboists Bruno Labate & Engelbert Brenner (with pipe) observe the conductor/soloist collaboration. Any help in identifying other musicians in this photo would be greatly appreciated!

This is George Gershwin rehearsing with conductor Willem van Hoogstraten (standing next to him) & the New York Philharmonic for a performance of “An American in Paris” in 1929.