Siobhan Magnus closes the show on "American Idol." In a polka dot blue top, she tells us about a year-and-a-half ago she had a mohawk. She has a very interesting vibe to her, like we're seeing a real person, not some fake performer.

Doing "Think," and I think her voice is a bit thin for it. Also, her outfit looks really old-fashioned. She has a strong voice and hits the high notes, but I don't know, it doesn't all fit for me. Definitely trying hard, and is performing her heart out. Whoa, man, totally hits the high note toward the end, gets the audience excited. Wow, totally changes my impression of her . . . makes me really like her!

Randy says that was bold and fearless, "dope, you slayed it, I loved it." Ellen said most people would say don't take on such a big song, but that was good. Kara is still astounded by that note. Simon says "you're such a strange person," says "parts of the song were terrible" but that note was unbelievable.

Yeah, she's super-interesting, another person who we could be watching turn into a superstar, and I'm definitely looking forward to seeing more of her.

PHOTOS: 'American Idol' semifinalists singing, and being cut | Auditions

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