AU where Jack sings everyday whilst hunting/doing island stuff and EXCLUSIVELY sings disney songs but just substitutes lines he forgets for whatever they're doing.
Jack, day five: One day the ship will come-
Jack, day seventeen: everybody wants to eat a pig-
Jack, day thirty-two: high-ho! high-ho! It's off to hunt we go- **agressively whistles in C#
Jack, to ralph: Don't you disrespect me little man!
Jack, before the vote: oh I just can't wait to be chief-
***also he forces the choir boys to recreate their concerts every night over the fire
***does it get on everyone's nerves? Yes. Can they stop him? No.
**the only one who can shut him up is maurice who will tell him he's off pitch
**jack will only let ralph duet with him. No one but the chief is worthy enough to hold a candle to his vocal talent.