Steven Schwartz wrote:

>Whether any of these are truely full collaborations is open to dispute.
>Only one composer worked on each (rather distinct) section.

I believe there are several Chinese "classical" compositions which we done
by committee!

Ussachevsky and Luening did collaborate on a few works.

One other work like the almost all of les six work...a set of variations on
a theme by Eugene Goossens, written by several composers including Copland,
Schuman, Hanson et al.  Only the Copland variation has ever been recorded
as far as I know.  I have a tape of the entire work, in poor sound.  It is
a bit of a journey through American music of the 1940s.

Karl