jason derulo 'American Idol': Jason Derulo to perform, along with mystery 'Idol' alumAccording to Jason Derulo‘s Facebook page, we can expect him to perform on the “American Idol” results show this Wednesday April 7. “Tune in!” he writes. “It’s gonna be something special.”

Derulo started rehearsals today, April 5. He’s already got a strong “Idol” connection, because idol judge Kara Dioguardi took a part in discovering him. And this Jason is not to be confused with Jason Reeves who’s featured on the Dioguardi-penned duet “Terrified” on former “Idol” Katharine McPhee‘s latest album.

Along with Derulo, reports have surfaced that a mystery “Idol” alum will also perform. “Idol” insider Fred Bronson dropped the following hints about the guest performer on the @IdolsNow twitter before deleting them a few hours later:

  • The “Idol” alum is male.
  • He’s not from Season 1 or Season 3.
  • He’s been watching “Idol” since it began.
  • He’s been interviewed by @IdolsNow.
  • He has at least two vowels in his last name, but maybe more.
  • He has either a first or last name with an “A” as the first or second letter.

We’re guessing David Archuleta, who, according to his Twitter, is in Utah, or Kris Allen, who recently returned to the US from Rwanda.

Who do you hope the mystery performer will turn out to be?

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Posted by:Carina MacKenzie