After seeing how much fun 600 singers had when they showed up at a Philadelphia department store and spontaneously sang the Hallelujah Chorus — with no warning to shoppers — and how the public loved it …

A bunch of college kids in Windsor, Canada, knew they could do it, too.

And they did. Watch the crowd. Watch how they join in. Watch the little children in the crowd, who are awestruck as total strangers unabashedly sing praises to the King of kings and Lord of lords!