Of the countless Facebook live videos floating around the web, there are a few gems, like this one.
Star Genleah Swain was visiting the Lincoln Memorial in Washington, D.C. when her friend prompted her to test the room's booming acoustics. She was hesitant at first, but after some goading, she agreed.
Among a crowd of chatty tourists, Swain belted out a powerful rendition of the "Star-Spangled Banner." In less than a minute, the talkative crowd went quiet and turned to hear her sing.
In case you're wondering how Swain's voice projected so well -- aside from the fact that she's an amazing singer -- consider the cavernous interior of the Lincoln Memorial. The area that contains the state of Abraham Lincoln is 60 feet wide 74 feet long and 60 feet high. Add the stone surfaces around the room, and you have a space that will make a voice like Swain's that much more powerful.
And what better song to project than our national anthem, the "Star-Spangled Banner"?