My private self colliding with the public

I went hiking this weekend by myself and twice other hikers suddenly appeared on the trail in front of me while I was singing a really emotional love song, really getting into it. I saw other people infrequently enough that I would start to feel alone but when people would appear, my private self would be exposed and then I'd have to make a quick decision: I chose to pretend that they hadn't heard me and I'd hum quietly to myself as they walked by.