Who added lyrics to a song that was composed by a man described by John Williams as "one of the great American masters of light orchestral music"?
Blue Tango: "Blue Tango" is an instrumental composition by Leroy Anderson, written in 1951 and published in 1952. Blue Tango:  It was later turned into a popular song with lyrics by Mitchell Parish. Leroy Anderson:  John Williams described him as "one of the great American masters of light orchestral music."
Mitchell Parish