Complex sentence: Productions included feature-length movies, shorts and newsreels, and performances by the 60-piece Fox Theatre Grand Orchestra, a 50-voice choir and the 32-member Tillerettes, owner William Fox's version of producer Samuel "Roxy" Rothafel's Roxyettes.
Split into simpler sentences: Productions included feature-length movies, shorts and newsreels, and performances by the 60-piece Fox Theatre Grand Orchestra, a 50-voice choir and a 32-member chorus line called the Tillerettes. This was Fox's version of producer Samuel "Roxy" Rothafel's Roxyettes.