The singer with a five octave vocal range, Mariah Carey, was guilty of a whiny squealy night on American Idol.

As if the “inspirational night” had not been enough, at the latest show the contestants were not only trained by the pop diva, but they also had to sing songs from her songbook.

Accompanied by her little white dog, Carey actually took her time to patiently explain to the Idols how to reach certain notes and practice with them.

Simon was perfectly right when he commented that the night would be easier for the boys, who would not be directly compared to Carey, like the girls would. But still, nobody expected the guys to be this good.

David Archuleta, the king of inspirational songs, was probably thrilled to sing “When You Believe,” and so were his teenage fans, who adored him, as usual. Songs like this one never fail to make Mr. Vulnerability appear even more adorable in the eyes of the screaming girls. And of the judges, who had the usual positive reaction towards his performance.

To blend into the night’s atmosphere, Carly Smithson finally wore a dress with long sleeves, which covered her well-known tattoo, while singing “Without You.” Not only did she look good in that dress, but she did a pretty good job, although it took her some time to loosen up. Randy said he didn’t like the beginning, but that her voice was powerful in the middle of the song. Simon didn’t think she pulled it off.

Syesha Mercado wiped the dust off Mariah’s “Vanishing,” a song that the diva had written in her teens. Paula commented it was "unbelievably magical for you," while Simon concluded it was technically very good. Randy was the only one who did not like the song choice. She might be in the Bottom Three this week.

Brooke White played the piano, which distracted her a little bit while singing “Hero.” But she made the good decision of not even trying to reach the high-pitched notes that are typical for Mariah. However, Simon said he felt something was missing from her performance, like when you order a hamburger and only get the bun. Randy added that the meat was there, but it was the condiments and mustard that were missing, while Paula made the most suitable comment: that Brooke and Ryan Seacrest looked good on the stage together.

David Cook turned the powerful ballad “Always Be My Baby” into a quite powerless one. Like everybody else, he seems to be having problems reaching the low notes, but that doesn’t appear to be a problem for the judges, who all praise him. Paula even wants it in a movie soundtrack.

Kristy Lee Cook gave Mariah chills when performing a very pitchy “Forever,” but she failed to impress the judges. “It didn’t give me any [chills],” Simon said.

And finally, Jason Castro sang “I Don’t Wanna Cry,” leaving aside his guitar this time. He started off badly, but managed to hit some impressive low and high notes. Randy compared it to a “luau,” which was not supposed to be a compliment, but Paula and Simon totally disagreed.

“The guys completely won the night,” Simon concluded in the end. Which pretty much says it all.