Do American Idol winners have to produce the kind of album that the show tells them?

American idol
mc23_06 asked:

Was just wondering if the winners of American Idol have a choice as to what kind of album to produce. For instance, Kris Allen was a worship leader at his church and college before coming on the show. Does he have the option to put out a christian album as his first? Or does the show get to tell him what his first album has to be like?