Nielsen Pre-GRAMMY Party Featuring John Legend, Preservation Hall Jazz Band, And Hannah Bronfman

Nielsen Pre-GRAMMY Party Featuring John Legend, Preservation Hall Jazz Band, And Hannah Bronfman
Barbara Calhoun, Howard Appelbaum, President Nielsen Entertainment, Dave Calhoun, Executive Chairman Board of Directors, Nielsen, Erin Crowford, SVP Nielsen, and the Nielsen Entertainment Team with the Preservation Hall Jazz Band attend the Nielsen Pre-GRAMMY Party at Mondrian Los Angeles on January 25, 2014 in West Hollywood, California.
(Jan. 24, 2014 - Source: Joe Scarnici/Getty Images North America)