Adam Ezegelian agrees with Tom Petty. The waiting really is the hardest part.

Even though the 21-year-old "American Idol" singer from Wantagh performed his rousing version of Twisted Sister's "I Wanna Rock" last Wednesday, he -- along with the other 11 guys competing for eight spots on the show -- will have to wait until Wednesday night to learn his fate.

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"It really is tough," said Ezegelian, calling from Detroit, where he will appear live on Wednesday's show. "You have to put it out of your mind. I can't do anything about it. You'll put yourself in a worse situation for the future if you dwell on it."

After all, Ezegelian has to focus on what he will perform if he advances to the next round.

Ezegelian is hopeful about his chances following "I Wanna Rock," a song he has loved since he was a kid and discovered it in "The SpongeBob SquarePants Movie." "It felt really good," he said. "Everybody seemed to get into it and I got a lot of positive feedback so that was great."

Ezegelian said he wants to continue offering crowd-pleasing performances because he values audience feedback, much like Twisted Sister singer Dee Snider, who praised his performance online.

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"There are some artists who make music and say, 'I don't care who likes it, I'm just making it for me,' " Ezegelian said. "Coming from a theater background, predominantly, and a 'Guitar Hero' background," he said, referring to the video game series, "making sure that the audience is having a good time is my top priority."