It is similar to other flamenco sounds like "Ay," "Lere," or "Lo-lo-lo," often used to build energy during a performance.
The most famous version of the song was released in by José Reyes & Los Reyes (early members of what would become the Gipsy Kings). LailolГЎ
In Spanish Gitano and Flamenco music, is a vocable —a set of non-lexical syllables used to carry a melody without specific words. It is similar to other flamenco sounds like