Ernest, as in the above post.. there is plenty of Wagner in Excalibre. The one I am alluding to, that is repeated many times, is from 'the ring' opera... it appears as the music when the sword comes out of the lake the first time. Been about a year since I've watched it, thus I cant give more...
I agree 1000% Excalibre, of all the epics, has aged the worst. The casting seems laughable. The battle scenes are a joke and the FX seem elementary. But, I say this 20 years after the film was made, and after 20 years of film-making technology. I still appreciate Excalibre for what it is...