Lip Sync Battle Season 4 Season 4, episode 7 Pentatonix Battle: Scott Hoying vs. Mitch Grassi vs. Kirstin Maldonado vs. Kevin Olusola 4.0 / 10 March 8, 2018 25 min A cappella group members go head to head. Previous episode Luis Fonsi vs. Joan Smalls Next episode Jeff Ross vs. Rob Schneider
