I play both electric/acoustic and double bass. I also dabble with the acoustic guitar and the banjo. I am very familiar with the chromatic fret board. I also know just enough music theory to be dangerous. I ordered a Folkroots H Series dulcimer from Folkcraft and chose a chromatic fret board. I wanted to have the capability of all of the notes. This book has been a blessing already by helping me to familiarize myself with the layout of the chromatic dulcimer.