 Sebastian sitting in a wheelchair by the pool and listening to  Ludwig van Beethovens 9th Symphony is a reference to  Stanley Kubrick (qv)s _Clockwork Orange, A (1971)_ (qv). In the  end of the movie the old man in a wheelchair (Mr. Alexander), whose  wife Alex and his droogs raped, is torturing Alex by playing the 9th  Symphony as Alex is upstairs locked up in a room.