These songs prove Luther Vandross was a master of dance-floor tracks as well as slow jams. “I'll Let You Slide” is a gem of ‘80s synth-funk boogie, “She Won't Talk to Me” wraps its tale of longing in bubbling R&B-pop and “Shine” reveals his roots in the world of disco. Meanwhile, his cover of Stevie Wonder's “Creepin'” is a marvelous expression of nighttime romance.