What is "azharot"

Azharot , "exhortations") are didactic liturgical poems on, or versifications of, the 613 commandments in rabbinical enumeration. The first known example appears in the tenth century Siddur of Saadia Gaon; The best known include those by two Spanish authors of the Middle Ages; Isaac ben Reuben Albargeloni and Solomon ibn Gabirol.