Here's an update. The door to door people playing music are, or at least used to be, legit. From CPS website in 2014:

Update – Soliciting for Children’s Joy Foundation. The Calgary Police Service would like to thank the public and media for their assistance in providing information that led to the location of individuals associated with the Children’s Joy Foundation. The investigation revealed that the charity is registered with the Canada Revenue Agency. It has been determined that they are collecting money for children in need in the Philippines and the six individuals are traveling across the country, volunteering for the foundation. The Calgary Police Service reminds citizens to look for the following from charities who solicit door-to-door: • Request the organization’s charitable number. • Request the option of a tax receipt, prior to providing a donation. • Representatives of the organization should be wearing visible ID. • Request contact information for the organization including phone number and address Original Release: Aggressive Donation Soliciting We are seeking public assistance to locate five people believed to be soliciting money for a fraudulent charity in the city’s northwest. Over the last few weeks, residents in the neighbourhoods of Tuscany and Valley Ridge have reported several incidents involving five people coming to their doors aggressively soliciting donations for “Children’s Joy Foundation.” In some of the reported incidents, an adult man and two adult women were seen with two youth, a boy and girl, who were playing a guitar and a violin. All are described as being of Asian descent. Residents reported the adults becoming particularly aggressive, and even going as far as pointing out change that people had in their cup holders inside their vehicles. We are unable to verify the legitimacy of the “Children’s Joy Foundation” and are seeking public assistance to locate the individuals believed to be involved in the aggressive soliciting. What to look for from charities who solicit door-to-door: - Request the organization’s charitable number. - Request the option of a tax receipt, prior to providing a donation. - Representatives of the organization should be wearing visible ID. - Request contact information for the organization including phone number and address. Anyone with information is asked to call us at 403-266-1234 or Crime Stoppers anonymously using any of the following methods: TALK: 1-800-222-8477 TYPE: tttTIPS.com TEXT: tttTIPS to 274637 Case #14212551