Like the mysterious alchemical formula chanted on their song "Koeeoaddi There," The Incredible String Band held a certain elemental mystique, composed of equal parts magic and imagination. With its two principal songwriters Robin Williamson and Mike Heron, the ISB's heyday was the 1967-72 period, when their albums were navigated by producer Joe Boyd and their live shows mixed mime, improvisational theatre, and rambling compositions played on an increasing number of ethnically exotic instruments in front of devoted audiences of chemically-fueled fans. But before the haze-daze of psychedelia, before the wondrous adventures of Hirem Pawnitof, Cousin Caterpillar, Big Ted, The Little Cloud, Black Jack Davey, Malcolm, Rose, or even Liccy, there was the more humble...