Jubilee (biblical) it was thought that the English term "Jubilee" derives from the Hebrew term "yobel" (via Latin ""), which in turn derives from "yobhel", meaning "ram"; the Jubilee year was announced by a blast on a shofar, an instrument made from a ram's horn, during that year's Yom Kippur. An alternative etymology notes that the Latin verb "iūbilō", "shout for joy," predates the Vulgate, and proposes that instead the Latin "jubilo" (meaning "shout"), as well as Middle Irish "ilach" (victory cry), New English "yowl", and Ancient Greek "iuzo" (ἰύζω: shout), derived from the Proto-Indo-European root "*yu-" (shout for joy). In this
Wind instrument sound with a vibrating reed. On the other hand, the didgeridoo, the wooden cornett (not to be confused with the cornet, which is made of brass) and the serpent are all made of wood (or plastic tubing, in the case of modern serpents), and the olifant made from ivory, but all of them belong to the family of brass instruments because the vibrating is done by the player's lips. In the Hornbostel-Sachs scheme of musical instrument classification, wind instruments are classed as aerophones. Sound production in all wind instruments depends on the entry of air into a flow-control valve attached