I’m watching history happen, right in front of my eyes.

It’s 12:30 Eastern Time on Monday, May 6.

On my computer screen, I’m watching a live satellite feed from space.

An astronaut is singing and playing guitar. He’s singing a song he wrote (with Canadian songwriter Ed Robertson from the band the Barenaked Ladies) called I.S.S. (Is Somebody Singing)?

But the really exciting part is something I can’t see. Hundreds of thousands of children in Canada and throughout the world are also singing, right at this moment, singing the very same song.

It’s part of Music Monday, which is an annual event in Canada that began in 2005. Each year, a song is chosen and school children across the country learn it so they can sing it at the same time on the same day.