10 guys performed on last night's American Idol1970s, the decade from which they could choose their songs
4 guys wore T-shirts
5 wore button down shirts
1 wore a polo shirt
7, the number of takes Jason Castro did in his interview introduction
10, the number of vocabulary words used by "word nerd" David Cook1 contestant, Jason Yeager, was told by Simon Cowell that he sounded like he was drunk at a party
Frank Micelotta/American Idol 2008/Getty
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