Complex sentence: Evans Music-and-Supper Rooms, 43 King Street, Covent Garden, was a famous venue for music and singing in early nineteenth century London, providing the type of entertainment which later evolved into music hall.
Split into simpler sentences: Evans Music-and-Supper Rooms, (located at 43 King Street, Covent Garden), was an entertainment venue for music and singing in early nineteenth century. The venue provided the type of entertainment which later evolved into music hall.