Backbeat: Nielsen Hosts First Pre-Grammy Party With John Legend, Preservation Hall Band

From left: Barbara Calhoun, singer/songwriter; John Legend; model Christine Teigen; and Dave Calhoun, executive chairman, Nielsen at the Nielsen Pre-Grammy Party at Mondrian Los Angeles on Saturday (Jan.25).

(Photo by Joe Scarnici/Getty Images for MAC Presents)

Nielsen hosted its first pre-Grammy party at the Mondrian Los Angeles Saturday night, featuring intimate sets from John Legend and the Preservation Hall Jazz Band. Lenny Kravitz was among the celebs spotted in the crowd checking out Legend's performance, with top Nielsen brass like executive chairman Dave Calhoun (and wife Barbara), CEO Mitch Barns, entertainment president Howard Appelbaum and music VP Tatiana Grace.

Mitch Barns, CEO, Nielsen, with family. (Photo by Joe Scarnici/Getty Images for MAC Presents)

Produced by MAC Presents, the party also hosted Power 100 brand execs like Anheuser-Busch's Paul Chibe (No. 14) and Citi's Jennifer Breithaupt (No. 24.) It was also the first event to be held at the Mondrian's newly opened venue Herringbone, which had lavishly decorated indoor and outdoor areas. Legend sang hits like "All Of Me" and "Ordinary People," a cover of Bruce Springsteen's "Dancing In The Dark," among other highlights.