Peter Wesley-Smith (born 10 June 1945) is an Australian librettist and legal scholar. He often worked as the librettist with his identical twin brother, composer Martin Wesley-Smith, on work that crosses a range of musical styles, including choral music, operas, computer music, music theatre, chamber and orchestral music, and audiovisual pieces that integrate words, music and images. Wordsmith Peter Wesley-Smith and composer Martin Wesley-Smith were known as Australia's counterparts to "Ira and George Gershwin”
Two main themes dominated the Wesley-Smith collaborations: the life, work and ideas of Lewis Carroll as portrayed in their rock opera BOOJUM!, and the plight of the people of East Timor.
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