control volume and bass guitar tones

playing bass guitar with the concentration must, of course, has a technique that must be mastered, one of the most bass players do is control volume technique on bass guitar, remember not control the volume on the bass amp and bass effects, but the bass guitar, which has volume knob should be set, and here's a guide How to Control volume and Bass Guitar Tones, from ehow.com

look for the bass guitar chords here