Henry Cow's - Leg End (1973)

"Political astuteness aside, Henry Cow's Leg End is simply a busy musical trip, comprised of snaking rhythms, unorthodox time signatures, and incongruous waves of multiple instruments that actually culminate in some appealing yet complex progressive rock. Here, on the band's debut, both Fred Frith and woodwind man Geoff Leigh hold nothing back, creating eclectic, avant garde-styled jazz movements without any sense of direction, or so it may seem at first, but paying close attention to Henry Cow's musical wallowing results in some first-rate instrumental fusion, albeit a little too abstract at times. ..."
allmusic
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YouTube: LegEnd (1973)