[log in to unmask] writes:

>I am particulary interested in the way several living composers have used
>quotations from Wagner in their works.

Benjamin Britten quotes the 'Tristan chord' in Albert Herring to denote
a hiccough.  John Woolrich (with more serious intent) quotes from Tristan
in his viola concerto.  Recorded on NMC.

Paul Silverthorne