Medúlla is arguably the point at which Björk turned from creating pop to a journey into the radically obscure, but in reality it is one of the most fully realised examples of an artist pushing the boundaries of what pop music can be and do, writes Matthew Barton
Questing experimental guitar hero Ben Chasny, aka Six Organs Of Admittance, tells Ben Graham about 13 records that influenced his playing and shaped his worldview, from psychedelic Japanese noise rock to American Primitive acoustic fingerpicking