Tonight’s Top 10 competition is something that never could have happened when this variety series was broadcast by Fox. That’s because only the Disney-owned ABC network, the new presenters of Idol, could build an entire show, as it does tonight, around “The Music of Disney.” Catie Turner will sing “Once Upon a Dream” from Sleeping Beauty, for example, and Jurnee will sing “How Far I’ll Go” from Moana. In terms of animated Disney music history, that’s quite a Jurnee.