Peggy was blogging that,
"in Canada the the first Monday of May each year is designated as Music Monday. It is an educational event organized within the schools across Canada - both primary and secondary. During that day, they take their music outside into the open air of their school grounds or into their communities, to perform a short concert. Many community and professional organizations and ensembles are also involved, along with musicians and artists across the country. It is a musical day.
The highlight of the day is at the same time across the country, i.e. 10 am Pacific time, 11 am Mountain time, 12 pm Central time, 1 pm Eastern time and 2 pm Atlantic time, and 2:30 in Newfoundland, everyone is united as they sing the same song. This year the designated piece of music is Sing Sing, by Serena Rider."
Here's the song that was choosen