Rousseau, Marcel Samuel - Autograph Letter Signed

French composer (1882-1955), organist, and opera director.

Autograph letter in French signed by him, no date mentioned, addressed to one of his pupils about rehearsals and appointments.  Size is 4.4 x 6.9 inches, 2 written pages in one sheet (front and back), translation not included, folds, in overall excellent condition.