Inside Deep Note: Music of 1970's Adult Cinema (2003)
The music is interspersed with dialogue from porn flicks (again, no idea if it's real), which, as you can imagine, I edited out when I ripped this to my music library; not really interested in explaining to anyone around if one of those audio clips shows up during shuffle mode. (Of course, a number of the instrumental tracks still include a fair share of moaning, so it's still sorta NSFW even with the spoken word tracks omitted.)
Anyway, even if these are just some prefabricated music loops from some off-brand music mixing software, they're kinda fun, deliberately repetitive, ideal for background play while chilling out. Most rock that 70s dirty funk vibe that I happen to love, but there's also some surprising stylistic variety, while still loosely hewing to what you can imagine you might hear if you were to wander into some scuzzy Times Square porn house circa 1974. (This is just a guess; c'mon, I was 8 at the time.)
Check out "Greg's Groove Thing":...and "Fuzzy Navel":Not unsurprisingly, the damn thing doesn't stream, but someone has helpfully ripped it (including those dialog tracks) to YouTube. You can find it here.