3-CD box set with with instructional CDs & accompanying book is a comprehensive & easy-to-use lesson on how to learn to play the harmonica. Portnoy, who's been in the Muddy Waters & Eric Clapton bands, realized other instructional materials put all of the explanations into the text of a book, and the accompanying sound reference consisted only of playing examples, so Jerry put everything on the CDs so you don't have to switch back & forth between the two. He starts at the very beginning on how to hold the harmonica, all the way to milking special sounds & effects out of the harp, and finally includes blues guitar jams to play along with.