One of the reasons I moved to Québec in 2015 was because of the mélange of languages in which many Quebecers — especially in Montréal — live and work. Some are able to change languages from sentence to sentence; others will switch in the middle of sentences or speak in an ever-changing medley of languages.
The language dance happens most frequently between French and English, but other languages can be involved — such as Indigenous and immigrant languages.