Alboreá is a ritual wedding song of the pueblo Gitano, Roma people in Spain. Once considered taboo to perform outside of the Gitano community, performers started to sing alboreá in public around the middle of the last century. Originally, the alboreá was accompanied by palmas (rhythmic hand-clapping) and sometimes the tambourine. Now, when it is taken to the stage, it is accompanied by the guitar, palmas, and often cajón. The alboreá, like other types of flamenco song, has many variants, depending on the artists and the geographical area where it is being sung. For example, in the ports of Cádiz, they are usually sung por soleá romanceada. In Lebrija and Utrera they sing bulerías romanceadas, and in Badajoz, they are sung with an air of jaleos from Extremadura.

Source/further reading: https://sites.google.com/flamencodemarchena.org/rinconflamenco/cantes-de-victoria-la-albore%C3%A1