Mariah Carey, the sultry-voiced singer and actress who performed so well in Precious , in town for a concert at the Oracle Arena Friday night, took time to thank Oakland on Twitter. This is Mariah Carey's tweet : I had so much fun last night! Thank you again Oakland! In Vegas now Baby! Come see me @ Haze @ Aria later..its about 13 hours ago via web The Oakland Tribune called the concert "flawless" and "diva-licious". That's a new one: Diva-licious. A YouTuber at the concert captured this video of Mariah Carey performing H.A.T.E.U and Hero: Stay tuned.