Cameo Kings: R&B's 25 Best Featured Guests

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  • John Legend
  • Faith Evans
  • Akon
  • Frank Ocean
  • Miguel
  • Erykah Badu
  • Alicia Keys
  • Ne-Yo
  • Beyoncé
  • Sleepy Brown
  • Kelly Rowland
  • Usher
  • Cee-Lo
  • Chris Brown
  • Mariah Carey
  • T-Pain
  • Rihanna
  • Nate Dogg
  • R. Kelly
  • Mary J. Blige
  • Kelly Rowland, Justin Timberlake, John Legend
  • The Weeknd
  • Jeremih
  • Justin Timberlake
  • Charlie Wilson
  • Trey Songz

18. Akon

After helping Young Jeezy land a hit with "Soul Survivor," Akon gave some extra muscle to songs by 50 Cent, Pitbull and many more.

(Photo: Kevin Winter/Getty Images)