Ask for 2 occupations. Then do a 4-
beat scene as follows:
Player 1 sings about how great and satisfying her job is, but she`s missing something critical, or has a minor little problem with it (melody 1)
Number 2 does the same (to a second melody)
Both characters meet in a bar, complaining about their problems.
They summarize their problem in one line each (to finish their song), something like "I got plenty of x but I`m missing y"
Then they solve each other`s problem (fitting each other`s x to the other`s y), they do this in a duet to a third melody.