"American Idol" pulled out all the stops for last night's [May 25] finale including a pair of special performances. 

Introduced by Lil Jon, the two remaining members, T-Boz and Chilli, of the R&B group TLC delivered a rare performance of their classics "No Scrubs" and "Waterfalls." Also, Beyoncé, enveloped in smoke and red lights, dazzled the audience with a special treat, the debut of her her new song, a sultry love ballad "1+1." 

Bey recently revealed the track listing for her forthcoming album 4 to include: "I Care," "I Miss You," "Best Thing I Never Had," "Party" (featuring Andre 3000), "Rather Die Young," "Start Over," "Love on Top," "Countdown," "End of Time," "I Was Here," and the albums first single "Run the World (Girls)" according to MTV.

"1+1" is the second official single off 4, which hits stores June 28.

(Photo: Mark Davis/Fox/PictureGroup)