This is my Youtube Video demonstrating the Lahej Rhythm from Southern Yemen. Laheji is a regional style in the same way you have a different feel in say Matanzas vs Havana or Santiago. There are a few ways to play it. Typically it's 2 drummers or more, Oud/Vocals and Chorus, with syncopated handclapping (like the Palmas in Flamenco). It's party music for weddings & festivals all over Yemen. I play this rhythm with my Yemeni Ensemble in New York.