Harry Styles will host and perform music on Saturday's show. ✨ Welcome back, @Harry_Styles! ✨ pic.twitter.com/S6p8Ii2iYq — Saturday Night Live - SNL (@nbcsnl) November 13, 2019 The behind-the-scenes promo shows Styles returning to Studio 8H where he's previously guest starred and performed music with One Direction. Kenan Thompson gives Styles a welcome back tour. "I'm going to be some characters," Styles says. "I'm going to sing. I'm pretty much down ...