<P> Various types of vehicle horns are used by percussionists as sound effects, or even melodically, in musical works . For example, George Gershwin's 1928 orchestral work An American in Paris calls for the use of 4 taxi horns . György Ligeti's opera Le Grand Macabre features two "Car Horn Preludes" scored for 12 bulb horns, each one tuned to a specific pitch . </P> <Table> <Tr> <Td> </Td> <Td> Klaxon alarm A sample of a submarine dive alarm used by United States Navy submarines during World War II </Td> </Tr> <Tr> <Td_colspan="2"> Problems playing this file? See media help . </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> Klaxon alarm A sample of a submarine dive alarm used by United States Navy submarines during World War II </Td> </Tr> <Tr> <Td_colspan="2"> Problems playing this file? See media help . </Td> </Tr>

Where does the sound of a car horn come from