Who was the composer of the " Letter Duet " which was heard in a big scene in the movie
The main theme ( " End Titles " on the soundtrack album ) is perhaps best known to modern audiences as the inspirational sounding music from many movie trailers dealing with inspirational , dramatic , or romantic films in much the same way that James Horner 's driving music from the end of " Aliens " is used in many movie trailers for action films .