Among the recordings Willis performed on are "Please Mr. Postman" by The Marvelettes, "The Way You Do the Things You Do" by The Temptations, "You Keep Me Hanging On" by The Supremes, and "I Was Made to Love Her" by Stevie Wonder.
Wśród nagrań, które wykonał Willis, są „Proszę pana listonosza” The Marvelettes, „Sposób, w jaki robisz rzeczy, które robisz” The Temptations, „You Keep Me Hanging On” The Supremes i „I Was Made to Love It” Steviego Wondera.