Eleazar ben Killir

Eleazar beRabbi Qallir, also known as Eleazar HaKalir, was a Byzantine Jewish poet whose Hebrew-language liturgical verses or piyyuṭim are sung during significant religious services, especially in the Nusach Ashkenaz rite, as well as in the Italian Nusach and well as the Romaniote rite. In particular, he wrote hymns for the Three Pilgrimage Festivals, for special Shabbats, for weekdays of festive character, and the fast days.