It's simple horticulture: when Jerry Garcia died in 1995, 250 pounds of cells infused with various hallucinogens were released into the environment. Tragic, yes, but the moment also provided the organic foundation necessary for the evolution of the jam band, a species (or class, order or phylum) of music that includes progressive jazz and funk—as well as world music and blues—but is noteworthy for its common love of long-format... More >>>