~nut,
Thanks for your reply and for trivia (I enjoy learning details like that.)
I found lyrics for "Another Train" and the Pete Morton recording in Europe (here), but not in USA yet -- will keep an eye open for it.
I wish I could hear your group's arrangement -- it sounds so nice! My background is classical, too; I feel restricted when I need to see notes on paper, rather than hearing 'by ear' what the harmony should be.

M.Ted,
I believe my sister hears the same Sally Barker (solo) version on that same Philly station (NPR?). I heard that arrangement recently, but still prefer the one by the Poozies (features Sally Barker on lead vocal, but the harmony is much richer.) It's been re-released on a best-of CD.
Thank you so much for your idea about the arrangement of voices. I will study your suggestion; I'm seeing more possibilities now. This discussion has been very helpful to me -- it's great to have all this input!
Mrs. Zed