The music score used throughout is lifted from various films in the James Bond franchise.
A black boxer was included as one of the pagoda masters in this movie because of rumors that Bruce Lee was going to ask Muhammad Ali to be one of the pagoda masters in his Game Of Death movie (the rumors were false).
A couple of times parts of 'Astronomy Domine' by Pink Floyd can be heard.
In one or two 'real' Bruce Lee films, there is also Pink Floyd music used.