Ex-Library; 14 oz.; 48 pages; Ex library HC in protected DJ Unread? Good + 1964 w/library markings. Elephant tusk, alphorn, or slush pump, horns have played a major role in music making since the beginning of civilization. Animal horns gave this family of instruments its name, and they all produce a tone when the air inside them divides into vibrating sections. With the same precise drawings and explanations be brought to his books on percussion, reed, and stringed instruments, Larry Kettelkamp discusses the history of horns, and demonstrates what makes them work.