Yo-Yo Ma plays music composed by Ennio Morricone, best known for his scores for Spaghetti Westerns like "Once Upon a Time in the West". Morricone's music for Westerns helped define the genre and brought his unique sound to a global audience. Cellist Yo-Yo Ma performing Morricone's music allows listeners to experience afresh the iconic scores that helped make Westerns cinematic classics.