from comments to this videos(audios): Have to like the internet sometimes. I taped this off the radio back in the 80s. I had no idea what it was called. Was just now listening to some Khruangbin ("new" music to a 50-something) and youtube decided I might like this. Its taken 35 years to find! Until now I could only describe it as "A song that should have been on the Apocalypse Now soundtrack
p.s. I don't find necessary Book :
if you know, where it can be downloaded for free, please, tell me. thanks