As was mentioned before... the ROIO called "Smoking Blues" is awesome. Definitely worth tracking down. Not only is Embryo and Green is the Colour great, but there's a nice blues improv tune done during that show too. Look really close at the cover of the album and you'll see why they called it Smoking Blues (hehehe).

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Just one of the several species of small furry animals that digs grooving with a pict in Fingal's Cave