Complex sentence: Jacquet appeared with Cab Calloway's band in Lena Horne's movie "Stormy Weather" and in 1944 in the Academy Award-nominated short film "Jammin' the Blues" with Billie Holiday and Lester Young.
Split into simpler sentences: Jacquet appeared with Cab Calloway's band in Lena Horne's movie "Stormy Weather". It was at this time that he appeared in the Academy Award-nominated short film "Jammin' the Blues" with Billie Holiday and Lester Young.