Ace Young must have a good singing voice or else he wouldn't have finished seventh during the fifth season of American Idol -- but so far, he's found more success as a songwriter than as a singer.  The 26-year-old co-wrote the chorus to Chris Daughtry's "It's Not Over," his fellow Idol 5 finalist's official debut single that has reached as high as No. 6 on the U.S. Billboard Hot 100.

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