Complex sentence: Anton Seidl and the Metropolitan Opera brought their popular interpretations of Wagner to the Brighton Beach Music Hall, where John Philip Sousa was in residence, and the New Brighton Theater was a hotspot for vaudeville.
Split into simpler sentences: Anton Seidl and the Metropolitan Opera brought their popular interpretations of Wagner to the Brighton Beach Music Hall, where John Philip Sousa was in residence. The New Brighton Theater was a hotspot for vaudeville.