10. "Conqueror," Estelle and Jussie Smollett: The soaring ballad, lifted from the British R&B singer's latest album, was flipped into a duet after Columbia senior vice president of A&R Shawn Holiday brought it to Smollett. It rocketed to No. 1 on iTunes' hip-hop/rap chart after airing.
9. "Keep It Movin', " Serayah McNeill and Yazz (Bryshere Gray): "It was really fun to record," McNeill said of the club banger. "I went from the studio right into filming the scene."
Also read: Correction: Music Studio Fire-Arrest story