Toronto’s Choir! Choir! Choir! has performed with the legendary Patti Smith, stood in for Tegan and Sara when they couldn’t make the Polaris Music Prize Gala, and recently opened for Mayor Rob Ford at the 47th annual Cavalcade of Lights festival at Nathan Phillips Square. Now, for their first recording available on iTunes the 70-member choir has covered Wham! Classic “Last Christmas.” All the proceeds from the sale of the song go to MSF/Doctors Without Borders. The group is also trying to start a gift chain, whereby you purchase the song for 99-cents, gift it to three people and ask them to do the same. — K.B.