I went for a walk in the park this morning, and as I sitting in the woods resting I heard someone singing opera, like really really well. I couldn't tell where it was coming from and I didn't see anyone so I was confused for a while until these three older guys walked down the path laughing. Apparently one of them had been singing, so my mom clapped and he thanked her.
It's very weird to hear disembodied song in the middle of the woods.