Welcome To The Jungle! Slash Talks Mentoring 'American Idol's' Final Four

Slash, Adam Lambert insetComposed by AccessHollywood.comAccess Hollywood

LOS ANGELES, Calif. -- For weeks, thousands of fans around the country watching Adam Lambert on "American Idol" have been reminded of a flame-haired rock singer from the late '80s. And while Axl Rose may not be appearing on the show, his former Guns N' Roses bandmate, Slash , is -- and the guitarist has given Adam the thumbs up.

"Those AI kids can sing their a**es off, especially Adam," Slash , who is mentoring "Idol's" rock week, wrote in a post on his Twitter page over the weekend.

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While he didn't offer any hints about the material the final four - Adam, Danny Gokey , Kris Allen and Allison Iraheta -- will be singing, Slash said he approves of their yet unnamed song choices.

"The contestants from 'AI' picked some really cool songs for next week, thank god!" Slash Tweeted.

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Late last week, Slash confirmed he had been asked to mentor the four finalists, and he accepted the gig on his own terms.

"As you may or may not know, the producers for 'American Idol' have asked me to be the mentor for 'Rock Week' next week. I was reluctant at [first], but they offered me the freedom to do it however I wanted," he wrote on his official MySpace page.

Slash , who is known for his guitar playing more than his vocal chords, has said he took on the mentor job in a way the show has never seen before.

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"The approach I'm taking is different than usual on the show, and I'm going to make this as Rock & Roll an 'American Idol' as possible," he wrote. "Wish me luck."

And Slash , who has worked with some of the rock world's greatest vocalists, said he was digging what's been coming out of the final four.

"There are a few singers this year who are really impressive," he wrote. "It's the 1st time any 'AI' line-up has really caught my attention."

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