He has a fine sales patter and a very dry sense of humour. A ringmaster called a "professor" accompanied their performance with a rapid circus patter. He is billed as being "a good looking charmer with a great line in patter". He normally partnered with a girl, sometimes in an adagio dance routine, sometimes comic patter. The tricks came with a suggested patter. Throughout, he has some patter with the organist, who sometimes plays appropriate music. A form of rapid patter occurred in the parabasis in ancient Greek comedies. Fred Sullivan was the prototype for the "patter" (comic) baritone roles in the later operas. It has been called the most famous Gilbert and Sullivan patter song. This is a list of some of the best known patter songs. "Glaswegian", otherwise known as the Glasgow patter, is a local variety of Scots. Panther leader Elaine Brown hired Betty Van Patter in 1974 as a bookkeeper. To this basic mix were added contests, games and disc jockey patter. Michael Munro wrote a guide to Glasgow Patter entitled "The Patter", first published in 1985. FBI files investigating Van Patter, likely inquiring into her death, have been destroyed.