1990 : Allen Ginsberg

Somewhere in Paris, 1990, November 7th : Allen Ginsberg sings poems by William Blake, "gospel-buddhist-dharma-country-western-standards", and some of his Beat Manifestos.
Here are some excerpts, exclusively on S/M/S, you'll never find these versions anywhere else.

Allen Ginsberg, The Tyger (from William Blake, Songs of Experience, 1794)
Allen Ginsberg, Don't Smoke