An early minimal masterpiece "Secrets of the Blue Bag" was titled for a Chinese description of the sky, and was originally recorded (and released) in 1972, at a time when Anthony Moore's experiments were still known only to a select few cognoscente. Of course his work with Slapp Happy and beyond, as a solo artist, vastly increased his audience, although it will be the hardcore fans alone who will truly return to this album on a regular basis. Primarily instrumental, the music is based around the…