I've seen this recommendation somewhere recently
Nova Scotia government site maybe ?
www.novascotia.com/search?query=+music

& there are a few links on these older threads

Nova Scotia folk circles or clubs?
mudcat.org/thread.cfm?threadid=159248

Looking for Singarounds in E Canada
mudcat.org/thread.cfm?threadid=173196

Please come back with any extra info you find. ;)