The Boss Dr. Rhythm DR-3 will add incredible-sounding drums to your music! Dr. Rhythm's loaded with acoustic and electronic drum kits, as well as a selection of bass sounds. Great for jamming, the DR-3's Rhythm Progressions and multiple variations make it easy to create a realistic-sounding drum track for any style of music. The Total Sound Control (TSC) feature allows you to tweak your kits to perfection. .