SINGING INTO A SPOTLIGHT.
Singing Into a Spotlight:
Singing onstage while being blinded by a spotlight can be disconcerting if you're not used to it.
Here's what you are supposed to do.
Pick a spot in the whiteness, in the middle of where you think the audience will be sitting, and sing to that spot like it is a person.
It will be a person, and they will think you're singing right to them. When you do this, everyone around that person will also think you're singing directly to them, because that's the way it will look from their point of view.
Move this focal "spot" several times while singing the song, to another place in the whiteness and sing to someone else. Don't do this rapidly, try to make it real for yourself and pace it as if you were really connected to each person.
Don't move the "spots" you sing to too far up or you'll be perceived as singing over everyone's heads. Keep them at about audience level. You'll get used to it quickly.
You can use this trick if ever you need to talk or sing to a camera. Many times you will be directed NOT to look at a camera when performing, but if you are supposed to (say for a video, or for a photo shoot) just look directly at the eye of the camera like you would look into human eyes... the eyes of whoever you'd logically be talking or singing to at the time.
This works in the "blackness" you see, as well. Just pick a spot in the general direction of where you think your audience is.