Beyonce wowed millions last night with her stirring rendition of new single ‘1+1’ on American Idol, and did the same for a select few in her dressing room just moments before showtime.

Check out the spine-tingling footage, reportedly shot by husband Jay-Z, after the jump…

When not snatching wigs, Beyonce blows them off with her powerhouse delivery. I’ve said many a time, yet can’t say it enough. Ms. Knowles is the vocal premium for today’s generation. More power to her!

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