I've been playing upright bass for twenty plus years in bluegrass bands. I'm ashamed to admit it but the breadth of my knowledge is pretty much exhausted once I get out of a I-IV-V progression and very seldom past the fifth fret. The guys I'm playing with now are doing some really great swing stuff which uses a lot of diminished chords and I just don't know what to do. I've been able to fake it OK by playing major-scale half runs off the root note of the chord but it sounds really thin to me. Is there an on-line tab resource someone could direct me to that illustrates diminished and augmented scales?