ISBN 9781610652476. This book/online audio set aims to teach you the basics - rhythm and breathing; tunes will come later. This revolutionary approach has helped thousands of new harmonica players; now it's YOUR turn! Chugging is all about sound textures - rich train sounds, gruff blues and spiraling country dance beats. The whole method is aural - just put on the online audio, also available for download, and follow the instructions - the book expands the music and puts it on paper for you.