Help me pick out music for a party

If you're open to something more exotic, Cafe Hammam from EMI is a collection of relaxed middle eastern music, mostly acoustic; piano, sax, violin. Not bombastic like much middle eastern pop music (which I love, too), but suave and sophisticated.
I also like the sound of Elf73's suggestion, although I've never heard it. His description makes it sound perfect

You say that most people are in your age group and probably share your tastes,so unless you are hiring a DJ, play the music you own and know. I would probably play lighter, happier music from the time periods you cited. Use the "Big Chill" as a guide. Definitely throw in some 60's Motown.

When you want to end the party just put on "Escalator Over the Hill" and act like you're really getting into the "groove". I works. Trust me.

Thanks for all the responses. When I worked at a record store in the late 70's Rockadanny, I used to put on Ornette Coleman at closing time. Worked every time.

Richard

I have lots of experience with this sort of thing. I'd suggest no vocals to compete with the conversations unless someone specifically asks.

Ry Cooder & Manuel Galbán-Mambo Sinuendo(I think 2 tracks have vocals).

John Fahey-America

Michael Hedges-Aerial Boundaries

Miles Davis-In A Silent Way

Japancakes-If I Could See Dallas

Global Communication-76:14

Soundtrack-The Straight Story

There are tons more but these are mostly non-intrusive but engaging if you want them to be.