Fourth volume in this phenomenal series of compilations focusing on the weirdest and most uncommon records from the late 60s/early 70s. Many Japanese records from this period are either very heavy psychedelic rock, or they are very experimental and avant garde with little in the way of classic UK & US Sixties 'underground' psychedelia to be found. As a result, while Japan and the United Kingdom released a comparable number of records during this period, there are a great many rare and expensive Japanese records that remain virtually unknown on this side of the globe. Here they are!