Alex North (born Isadore Soifer, December 4, 1910 – September 8, 1991) was an American composer best known for his many film scores, including A Streetcar Named Desire (one of the first jazz-based film scores), Viva Zapata!, Spartacus, Cleopatra, and Who's Afraid of Virginia Woolf? He was the first composer to receive an Honorary Academy Award, but never won a competitive Oscar despite fifteen nominations.

He wrote the music for Unchained Melody as the theme for the prison film Unchained (1955), It has become a standard and one of the most recorded songs of the 20th century, with over 1,500 recordings made by more than 670 artists, in multiple languages.

Source: Wikipedia (https://en.wikipedia.org/wiki/Alex_North)