A shofar (Hebrew: About this sound שׁוֹפָר , pronounced [ʃoˈfaʁ]) is a musical instrument of ancient origin, made of a horn, traditionally that of a ram, used for Jewish religious purposes. Like the modern bugle, the shofar lacks pitch-altering devices. All pitch control is done by varying the player's embouchure. The shofar is blown in synagogue services on Rosh Hashanah and at the very end of Yom Kippur, and is also blown every weekday morning in the month of Elul running up to Rosh Hashanah. Shofars come in a variety of sizes.