Ariana Grande and Seth McFarlane had the perfect duet on an episode of Apple Music’s Carpool Karaoke: The Series The two sang along to 'Suddenly Seymour' and Grande seemed taken away by McFarlane's vocals. The 20-part series has featured tons of celeb pairings from Alicia Keys and John Legend to James Corden and Will Smith. Head over to Apple Music to watch! "Tonight on @carpoolkaraoke @applemusic!!! @macfarlane and I serve you some show tunes.