It's a great book for beginers and for advencer congueros. Laurent explains the fundaments of afro-cuban druming, for example the philosophy of clave. He teachs how to play basic rhythms like: marcha, mozambique, pilon, songo and other afro-cuban rhythms. He adds many variations to each rhythm which could be play on 1, 2 or 3 congas. Easy notation and great audio recording helps players to keep the right afro-cuban groove. I recomend it to everyone who wants to develop his art of playing congas.