Bobby Naughton's music of the 1970s; Leo Smith - Kabell, Nessa, and ECM recordings; Marc Levin "The Dragon Suite" on Savoy; Masahiko Togashi "Spiritual Nature" & "Guild for Human Music" (it's been a while since I gave the latter a spin, but I remember it being very spare); Joe Giardullo's ensemble work, to name a few. Of course, just because something is spare or quiet doesn't mean it's not intense, powerful, and emotionally deep.