After the books Very Easy Swop, Easy Swop, Big Swop, and More Swop, Master Swop is the last and most difficult. If you have a thorough command of the pieces in this book, you have reached the stage of a certain mastery when it comes to swing and pop music. This book can also be used to play with a keyboard or guitar player: for example, at a concert, a workshop presentation, or a performance with another music group.