Bass Books
Learn Bass Guitar Modes – Bass Books

Looking to learn bass guitar modes? Check out these books, for practical study/learning guides…
Titles by Mark John Sternal (there are DVD and book options) are probably the easiest ones to learn from:
Bass Guitar DVD: Total Scales Techniques and Applications
And here are several more great options:
The Melodic Bass Library by Jimmy Haslip
Bass Fretboard Basics by Paul Farnen
The Bass Players Guide to Scales and Modes by Stuart Clayton
All of these bass books and more are available at BassBooks.com
