Polyrhythmic Potential - Book & CD. You will find that the book is divided into two parts. The first part contains exercises and explanations of polyrhythmic concepts, The second part contains note-for-note transcriptions of the songs from Miss Machine. The concepts explained in the first section are applied in the songs, so it is recommended that you complete practicing part 1 of the book before moving on to part 2. The CD accompanies this book is a date disk for use in your computer.