Maria Martinez provides in-depth coverage of: Mambo, Songo, Nanigo and Mozambique patterns; cowbell and ride cymbal variations; studies to develop left-foot clave; ostinatos, rhythm studies, 2-bar phrases; and much more! The recordings feature 40 full-band tracks with demos and play-alongs. The audio is accessed online using the unique code inside each book and can be streamed or downloaded. The audio files include PLAYBACK , a multi-functional audio player that allows you to slow down audio without changing pitch, set loop points, change keys, and pan left or right.