The composer is perhaps either Richard Rodney Bennett (b. 1936) or
Robert Russell Bennett. If it is the former, there is a bio on him at:
http://www.schirmer.com/composers/bennett/bio.html
and and available bio-biliography of him at:
http://info.greenwood.com/books/0313261/0313261792.html
Sorry, I don't know the music. The piece you refer to appears to be
titled Abraham Lincoln/Sights & Sound.
Dick Hihn
[Richard Rodney is an English composer, I believe, so that leaves Robert
Russell as the most likely of the two. -Dave]