I would probably add a song or 2 from the parent trap movies! Disney songs are known for their catchy beats, impressive lyrics, and Broadway-style choruses. They're fun to sing alone, but they're even better when sung with your best friends.
Of course there's always that possibility of a disney wedding. I've been saying that I would play "If I Never Knew You" at my wedding since I was like, It's just the most beautiful song, with and without words.