Uzeyir bey Abdul Hussein oglu Hajibeyov (Azerbaijani: Üzeyir bəy Əbdülhüseyn oğlu Hacıbəyov; Russian: Узеир Абдул-Гусейн оглы Гаджибеков; September 18, 1885, Agjabadi – November 23, 1948, Baku) was an Azerbaijani and Soviet composer, conductor, scientist, publicist, playwright, teacher, translator, and social figure. He is recognized as the father of Azerbaijani classical music and opera. Uzeyir Hajibeyov composed music for the national anthem of Azerbaijan Democratic Republic (also the anthem of the modern Republic of Azerbaijan) as well as the state anthem of Azerbaijan SSR.