Short documentary about Mance Lipscomb worth watching to see his Delta Blues guitar work

 Les Blank's 1971 short documentary, A Well Spent Life, is a time capsule, a glimpse into life in a remote Texas village of farm workers scrabbling out a living from the earth and not more than 2 generations removed from slavery; among the residents is a Mance Lipscomb, not too well known today but at the time and among aficionados recognized as one of the greatest Delta Blues guitarists, up there w/ Lightnin' Hopkins and Elmore James. Blank's film follow ML closely and, thankfully, it includes many of many of his songs  absolutely beautiful, resonant guitar work, sometimes w/ a slide sometimes w/ fingers on frets. The film is worth it for a look at ML's work and his music - I don't think any of the compositions were his own but I'm not sure of that - and into the personalities of ML, his long-suffering spouse, and other neighbors - filmed 50 years ago but it seems 100. ML was about 75 at the time and looked strong but aged, and in fact his life and career were almost over; great to have his work and voice preserved. But where the film falls short is its lack of context: We, or at least I, would like to know how ML was "discovered," how his life changed if at all (probably not much) by his late-life success, what it was like for him to record and to headline at blues festivals, and what he listened to, how her learned, what has influenced him. But that would be a longer and more ambitious project, probably w/ too many talking heads - though I would have liked him to ask ML at least about his music career and his formative listening and learning.