Weighted Down: The Complicated Life of Skip Spence

As a member of era-defining bands Moby Grape, Quicksilver Messenger Service, and Jefferson Airplane, Spence played a large part in setting the agenda and aesthetic for many other groups of the era. His only solo album, the hugely psychedelic and occasionally challenging Oar, cemented his reputation, and he has since gone on to be celebrated by the likes of Tom Waits, Beck, and Robert Plant.

However, the musi...