One of the best methods for learning advanced rhythm, polyrhythm, and metric/harmonic superimposition. Looks at rhythm through a magnifying glass and enables the student to see, sing and hear various subdivisions and groupings of subdivisions. Can be used by any and all instrumentalists. Will greatly improve the student's improvisational ability to create and respond to rhythmic musical dialogue. Students will learn how to make core rhythms into core grooves and use beat displacement to alter these core grooves. The book is complete with general exercises for all instrumentalists as well as specific exercises for pianists, bassists and drummers; a DVD with demonstrations of all the material from the book; improvised examples by Ari Hoenig and Johannes Weidenmueller in duo as well as trio with Aaron Goldberg; transcriptions on how to harmonically navigate through polyrhythm inside standard jazz forms; musical examples which can be watched, and used as a play along.