Isbin is at the lute, Walton on the bass. Together they traverse a sort of free/composed territory that combines avant improv with echoes of early music lute sounds. Not just echoes, but not direct quotations mostly, with one medieval Welsh folksong being the exception.
It's a pretty magical combination and a provocative, very well played program. Both are impressive exponents of their instruments and they work together closely and quite productively.
It's a CD you might not expect. Once you hear it a few times it starts getting to you in nice ways.
There may be nothing else like it out there. And it's good. Happy listening!