"For his third album, Inventions and Dimensions, Herbie Hancock changed course dramatically. Instead of recording another multifaceted album like My Point of View, he explored a Latin-inflected variation of post-bop with a small quartet ... The result is risky, unpredictable music that is intensely cerebral and quite satisfying. Inventions and Dimensions displays his willingness to experiment and illustrates that his playing is reaching new, idiosyncratic heights. Listening to this, the subsequent developments of Miles Davis' invitation to join his quartet and the challenging Empyrean Isles come as no surprise".