In this paper illuminated one of the Uzbek folk ancient songs “O’lan” genre, which is singing by boys and girls in the national Uzbek folk ceremonies. And also the characteristics of the oldest music genre of the Uzbek nation – “Ulan”. Author supposes examples of “ulan” genre which is quite important for the Uzbek folklore and it is mainly spread among vagrant tribes of uzbek nation. In ancient times, it was used to sing it in weddings, one by one, usually between women and men. It also had a dominant lyric meaning, and got 11 verses and historically connected with weddings. “Ulan” originated from the ancient wedding traditions and motives of this genre developed during the ages and evolved by continuously live performance and there are sti...