It was then delayed in the Conservative-dominated Senate until the election was called, meaning it did not pass.
The Grannies said they hope to post the rap to YouTube to reach out to youth ahead of the May 2 election.
"It is a pre-election video, but it's also a post election video," said Peggy Edwards from the One World Grannies. "This is a humanitarian issue and it's not going to go away. Canada should do our part."
One World Grannies is one of 200 Canadian Granny groups, according to their website.
They raise money through the Stephen Lewis Foundation for the millions of grandmothers in sub-Saharan Africa who have to raise their grandchildren after their mother dies of HIV/AIDS or related illnesses.