Complex sentence: In light music circles, Parker's overture to "The Glass Slipper" has long been a favourite, although it was many years before it became available on a commercial recording, and much of Parker's concert music is now either lost or neglected.
Split into simpler sentences: In light music circles, Parker's overture to "The Glass Slipper" has long been a favourite, although it was many years before it became available on a commercial recording. Much of Parker's concert music is now either lost or neglected.