A Las Vegas Classic! Some you should definitely go see when you're in Vegas. They have day and night shows. You can even pay to request a song. Just beautiful!!
Every 30 minutes during the day.
Every 15 minutes during the night.
I prefer the night shows because it looks a lot prettier. Plus this is free! It's also funny that they're known for this giant water show that's in the middle of a dessert. Hah, just shows what money can buy.
Remember to go into Bellagio while you're here. They have stuff to see in the hotel too.