Music throughout the scene + command in slide layers?

Hi there,

I'm in the process of creating a game found here: https://360.articulate.com/review/content/bf33368b-6488-4277-94b1-94953fe63e04/review

My questions are:

1) I have two slides in Scene 1. How do I make it so that the same music is played throughout the scene (uninterrupted)? (I thought about trying to combine both slides into one slide but then it started getting very confusing trying to keep track of all the commands with so many objects and text).
2) I want to create slide layers that pop up and say "Bon Appétit" when all three food items are dropped in the pan (in the Breakfast, Lunch, and Dinner scenes). How can I create this command?