The Beatles: Unplugged is a collection of acoustic demos of White Album songs, made in 1968. A real jewel.
Of course these were recorded as demos, and not meant for release of any kind, but even so, they’re fairly high-quality, in a lo-fi kind of way. Listening to the songs in this form makes me think of the folk/psych revivalism of the so-called New Weird America that hearkened back to so much sixties’ trippy playfulness, but mostly eschewed the major label studio sound of sixties’ records and welcomed prominent tape hiss and single-track, bedroom takes. Given the rapid pop-culture recycling that is the hallmark of the early 21st century, The Beatles: Unplugged sounds strangely modern.