What nationality is the musician who wrote the music of the song Enter Sandman, with Kirk Hammett and James Hetfield ? 
Enter Sandman:  The music was written by Kirk Hammett, James Hetfield and Lars Ulrich. Lars Ulrich: Lars Ulrich {'1': ", '2': ", '3': 'R', '4': "} ( ; ] ; born December 26, 1963) is a Danish musician, songwriter, actor, and record producer.
Danish