A double LP package from Bardo Pond, combining two of their super rare jam volumes on vinyl for the first time. A further edition in this celebrated series, 'Volume 4' and 'Volume 5' feature more freeform improvisational pieces from the hypnotic Philadelphia outfit. Capturing the raw essence of the band, whose fearless exploration blurs the lines between structure, chaos, melody and noise. Bardo Pond's music traverses space rock, acid rock, post-rock, shoegaze, noise, Krautrock and psychedelia.

'Volume 4' hails from self-released sessions recorded in January 2002, its five tracks include the supremely tripped out heaviness of 'K2' and the balance-shifting 'New Drunks (Revisited)' with Isobel Sollenberger's exquisite and, frankly, quite disturbing vocal. They're shorter interrogations of sound by Bardo terms, almost succinct in their mesmerising riffage and off-kilter arrangements.

By contrast, 'Volume 5' consists of two lengthy mantras recorded between 2000 and 2004 and released as the tape spool spiralled out. 'FUFO' sounds like Cluster unravelling with Merzbow mixing, a post-industrial slew of hypnotic proportions, while 'Monarch' begins as a Current 93-like neo-folk mood piece before evolving into a wailing slice of drone-drenched Americana by way of a Velvets' jam. "We were pushing improvisations as far as we could. It was glorious having the studio. The more that our heads were spinning after a session, the better we knew that session would sound when we listened back. We were getting together two nights a week, usually three or four hours working on material and songs and the other half the time letting loose.

Volumes 4 and 5 gather together some of these improvisations, and one early song that we felt like doing." Adds Michael Gibbons of Bardo Pond. "One of underground rock's most extraordinary enigmas, a majestic command of sound." The Quietus.