Fascinating day on Saturday, interviewing Justin Timberlake, who is not only a voice in the new DreamWorks animated movie Trolls but also served as its executive music producer. Timberlake oversaw production on all of the songs, both original and covers. He was joined by two of his collaborators, top pop producers Max Martin and Shellback. The occasion was a Society of Composers & Lyricists screening of the movie at Raleigh Studios; the room was packed and all three guys were thoughtful and funny. Even Timberlake seemed wowed by the notion that his video for “Can’t Stop the Feeling,” a strong contender for Best Song honors during awards season, has now been viewed by 275 million people.