This tape of a 1968 live concert by Tim Buckley (Jeff's dad, and the greatest folk-rock troubadour of his era, who died of a drug overdose in 1975), came to light a few years ago but was previously thought too sonically far-gone to resuscitate.

Much knob-twiddling later, the variable quality has been buffed and sheened sufficiently to allow for a public release, and, while there are few surprises for Buckley fetishists, it represents a fascinating document, as well as more than doing the business musically.

The band, with the famous Danish bassist Niels-Henning Orsted Pedersen sitting in, is clearly on a collective high, and the repertoire (with only four songs taking up 50 minutes) derives from Buckley's Happy Sad era, his most jazzy and melancholic incarnation.

Vocally, Buckley whoops and moans quite superbly, and the overall effect is entirely mesmerising.