Once you've left the dining room, and not eat the rest of the food on the table, you decided to find the source of the singing you started hearing after you finished eating the roasted fish that tasted good. The only place you haven't checked was outside of the mansion in the backyard, where you believed the owner would be.
As you headed outside, you discovered that it was no longer raining from when you left the school dance, and the trees from the backyard garden have already started growing leaves on the branches as if it already became Spring again. You also saw that there was a 25 ft wide swimming pool with clean water. You weren't exactly sure why the pool with have unfrozen water in it during winter, but you could also hear the singing get louder the longer you remained outside.