How about: Norman Dello Joio "The mystic trumpeter" (Whitman) SATB, horn, 1943 (sorry, no keyboard part)
There are some others, but it might take some further digging. I was convinced that Doug Hill had something that he wrote and recorded like this but I can't find it (I did turn up his "Thoughtful wanderings" for natural horn and percussion if Richard Burdick hasn't already noted that). and didn't Cabbage do something of this sort? Peter Hirsch _______________________________________________ post: horn@music.memphis.edu unsubscribe or set options at http://music2.memphis.edu/mailman/options/horn/archive%40jab.org