Complex sentence: In 1995 Coates Hall was sold to St Mary's Music School and houses the (de-consecrated) chapel which is used for concerts, two libraries, staff offices, bedrooms for boarding pupils, and around 30 music practice rooms.
Split into simpler sentences: In 1995 Coates Hall was sold to St Mary's Music School. The main building includes the (de-consecrated) chapel which is used for concerts, two libraries, staff offices, bedrooms for boarding pupils, and around 30 music practice rooms.