This book is divided into 15 highly-structured chapters introducing note-reading principles and individual notes on the diatonic harmonica through carefully graded, well-known songs. Tunes include Mary's Lamb, When the Saints Go Marching In, Beautiful Brown Eyes, Long Long Ago, Bach In Four, Joy to the World, The Drunken Sailor, Jesu Joy of Man's Desiring, and dozens of other titles. The author gradually introduces various concepts essential to good sight-reading, including note and rest values, dotted rhythms, time signatures, and harmonica chords. The same song may occur a second time in a more complex arrangement, building on previously established musical skills.