Some random thoughts; I haven't read anyone else's response.
1) 70's arrangement out of Broadway. Labelle?
2) Might be an organ trio (quartet w/ conga), but with guitar as a lead. Guitar has the sweetness of a Burrell or Benson, but with more modern shadings. Goes on too long, but maybe I'm impatient.
3) Some foreign language. Lively. Guessing it's the trombonist's date, because the trombone's a little out of place as the lead instrument. No clue who.
4) More Brazil, Chick Corea influence. Stan Getz?
5) Johnny Mathis.
6) Whoever it is, he's free at last. Free to boogie to KC & The Sunshine Band! My guess is it's some straight-ahead saxist forced to do this during the height of the disco boom.
7) Laura Nyro.
8 ) Some Ahmad Jamal disciple. I'm feeling like Nat Hentoff.
9) Starts off sounding like Eddie Harris. Hard attack. Maybe Rahsaan, one of those 32Jazz live dates.
10) Michel Urbaniak? Sounds like some classically-trained violinist who hates his life & figures jazz affords him more "freedom."
11) Tubby Hayes on vibes? I like the '60's British brass sound, though it's probably nostalgia.
12) JC Superstar? Godspell?
13) As soon as I heard "bright tomorrows," I knew it would be rhymed with "sorrows." Bad trip, man. I need some punk rock as an antidote.
14) No clue.
This was fun; thanks.