I have always loved the sound and attack of ash-bodied guitars and basses. I've got serious back problems, so a full body from Northern Ash is not possible. I read somewhere that Swamp Ash would have a lot darker tonality than Northern Ash, even darker than Alder. Is this true? Most of the Swamp Ash bodied guitars/basses I have liked very much. Or is Light Ash different than Swamp Ash? I originally intended to have my next bass body made from ash with numerous cavities in the body, mostly to reduce weight. The cavities would be covered and hidden by a 1/3 inch maple cap. I hope the maple will not alter the Ash attitude... Or should I go for Swamp/Light Ash instead? Other specs of the future bass: -5 strings, 35" scale, 24 frets. -Bolt-on, maple neck, maple or pao ferro fretboard. -Passive MM/J pickups. -Sunburst satin finish. -Aki.