Prince’s surprise appearance at the 72nd annual Golden Globe Awards — where the artist presented the award for best original song to John Legend and Common, for “Glory” from the film “Selma” — drove the most social conversation on Facebook and Twitter on Sunday evening.

Ironically, the notoriously reclusive Prince does not have accounts on the two social services, having deleted them last fall. (He misidentified the category in his prefatory remarks as “best original score.”)

Over all, on Twitter, users posted 2.6 million tweets during NBC’s 8-11 p.m. ET telecast Sunday related to the Golden Globes. In the U.S., 1.89 million tweets were viewed by 10.4 million users from 5-11 p.m. ET — compared with 2.4 million tweets seen by 10.4 million people on Twitter for last year’s Golden Globes. Those both trailed the 2014 Oscars, which produced 11.2 million tweets and 13.9 million people exposed to a total of 1.04 billion tweet impressions; that included host Ellen DeGeneres’ much-retweeted selfie.

At the Golden Globes Sunday, the No. 1 moment on Twitter was Prince presenting best original song to Legend and Common, followed by Matt Bomer winning best supporting actor in a miniseries for “The Normal Heart” and Billy Bob Thornton winning best actor in a miniseries for FX’s “Fargo.”

Meanwhile, on Facebook, 8 million people worldwide had over 17 million interactions related to the Golden Globes on Sunday. That’s up substantially from 4.1 million people and 7.2 million interactions for last year’s Globes. However, as on Twitter, the 2015 kudocast still trailed last year’s Oscars, for which 11.3 million users had a total of 25.4 million interactions.

On Facebook, Prince’s presentation to Legend and Common for best original song was also the top moment, followed by Joanne Froggatt winning best supporting actress for TV drama for “Downton Abbey”; Amazon’s “Transparent” winning best TV comedy or musical; Thornton winning for “Fargo”; and Ricky Gervais presenting Amy Adams with the award for best actress in a motion picture musical or comedy for “Big Eyes.”