A cantor or chanter is a person who leads people in singing or sometimes in prayer. In formal Christian worship, a cantor is a person who sings solo verses or passages to which the choir or congregation responds. In Judaism, a cantor is one who sings and leads people in prayer in a Jewish religious service and may be called hazzan. A cantor in Reform and Conservative Judaism is an ordained clergyperson, similar to that of an ordained rabbi, if the cantor has gone through seminary training or been certified as a "Cantor" from an endorsed seminary.