Unetanneh Tokef

Untanneh Tokef (Hebrew: וּנְתַנֶּה תּוֹקֶף, 'let us speak of the awesomeness [of the day]'), also spelled Unthanneh Toqeph, Un'taneh Tokef, or Unsanneh Tokef, is a piyyut that has been a part of the Rosh Hashanah and Yom Kippur liturgy in some traditions of Rabbinic Judaism for centuries. It introduces the Kedushah of the Mussaf services of the High Holy Days. In many communities, it is chanted while the Torah ark is open and the congregants are standing. It is the "central poem of the High Holy Day [of the Day of Atonement]", argued Herman Wouk. The ArtScroll machzor calls it "one of the most stirring compositions in the entire liturgy of the Days of Awe".