Ululation (), , is a long, wavering, high-pitched vocal sound resembling a howl with a trilling quality. It is produced by emitting a high pitched loud voice accompanied with a rapid back and forth movement of the tongue and the uvula. Around the world Ululation is practiced either alone or as part of certain styles of singing, on various occasions of communal ritual events (like weddings) used to express strong emotion. Ululation is practised in all parts of Africa, the Middle East, and as far east as Central and South Asia. It is also practiced in a few places in Europe, like Cyprus, and among the diaspora community originating from these areas. Ululation also occurs among Mizrahi Jews during simcha (festive occasions) such as at the inauguration of a Torah scroll (hachnasat sefer Torah), brit milah (circumcision), communal celebrations, weddings, bar mitzvah celebrations, and most of all at henna celebrations. The Modern Hebrew word for ululation is "tsahalulim" (Hebrew: צהלולים). Recordings of various styles of ululations are commonly found in the music of artists performing Mizrahi styles of music. Ululation is commonly used in Middle Eastern weddings. In the Arab world, zaghārīt (Arabic: زغاريت) is a ululation performed to honor someone. For example, zagharits are widely performed and documented in Egyptian movies featuring traditional Egyptian weddings, where women are known for their very long and very loud performed ululations. Another example of the incorporation of ululations into traditional wedding songs can be found in Zaghareed (also spelled zaghareet), a collection of traditional Palestinian wedding songs reinterpreted and rearranged by Mohsen Subhi and produced in 1997 by the Palestinian National Music and Dance Troupe El-Funoun. In Ethiopia and Eritrea, ululation (called ililta) is part of a Christian religious ritual performed by worshipers as a feature of Sunday or other services in the Ethiopian Orthodox Tewahedo Church, Eritrean Orthodox Tewahedo Church, and some Ethiopian Evangelical Churches. In Hausa ululation is called guda, in Zulu lilizela in Tsonga nkulungwani and in Northern SiNdebele ukubulula. Ululation is incorporated into African musical styles such as Tshangani music, where it is a form of audience participation, along with clapping and call-and-response. In Tanzania ululation is a celebratory cheer sound when good news has been shared or during weddings, welcoming of a newborn home, graduations and other festivals even in church when sermons are going on. In Swahili it is known as vigelele and in Luo dialect