The book is crafted to help drummers develop a sound of their own. According to a press release, the book is very different from others out there because it is not only examples of drum grooves and fills.

\'Repercussions\' also features other topics: from studio and recording tips on getting a sound and working with the click track, to graphics beautifully drawn to show examples of hand technique, foot technique and more. There are examples of drum fills, jungle drum and bass rhythms, linear drumming, double bass beats and fills and more. Says Macaluso:

\"There are also interesting stories on touring, gigging, and recording. These real life examples alone set this drum book apart from the rest.\"

The \'Repercussions\' set comes with a cd enclosed showing all the examples in the book (one hour long).

\'Repercussions\' has been endorsed by some of the biggest and best drum legends in the music business. Nicko McBrain (Iron Maiden) states:

\"Johnny Mac is one mighty fine player. You can\'t go wrong learning the tricks if his trade. This book reflects Johnny\'s way of explaining the finer points of our trade. It has his sense of humor and makes it fun to learn. After all, that\'s what it\'s all about. Have fun!\"

And Bobby Jarzombek (Rob Halford, Sabastian Bach, Spastic Ink) adds:

\"I love John\'s playing. He\'s got that \'old-school power thing\', the finesse of an orchestral percussionist, and the imagination to put it all together to create some of the most killer drumming you\'ll ever hear.\"