American Idol is going gaga!

Lady Gaga will lend her talents to mentor the show's final four contestants -- Lauren Alaina, Scotty McCreery, Haley Reinhart and James Durbin -- on Wednesday's performance round.

Gaga, 24, will guide the singers as they select and perform songs from the songbook of producing duo Jerry Leiber and Mike Stoller.

While the Top 4 Idols won't be singing Gaga's tunes, one singer is sure to mesh well with her.

Reinhart, 20, belted out Gaga's unreleased single, "You and I," on the May 4 broadcast. According to Reinhart, she chatted with the singer before selecting the track, which Gaga gave her blessing to Reinhart to sing.

Ahead of Wednesday's performance round, tell Us: Which Idol will benefit most from Lady Gaga's mentorship?

By Allison Corneau for UsMagazine.com. For more Channel Surfing, click here.

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288 Votes
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65 Votes
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853 Votes
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407 Votes

Watercooler Poll

Which Idol Will Benefit Most From Lady Gaga's Mentorship?

Lauren Alaina
Scotty McCreery
Haley Reinhart
James Durbin