Up until now music tours were not seen as being a valid purpose to obtain a border exemption due to music not considered "critical to the economic recovery" of the country.
So even if a band obtained their 408 entertainment visas the border control exemption applications would be........ red stamped... DENIED – NOT EXCEMPT
Prior to this month, and federal travel restriction last year , the only musicians we have been able to obtain an exemption for were essentially those very few where the visit related primarily to film/TV production (eg documentaries, reality TV, movies). Film & TV production was a designated "a critical industry for economic recovery”.
So that is the reason folks that when tours were announced, they were swiftly postponed and the only international musicians whom performed live where those already in the country and / or held an existing residency permit, or entered for another main purpose, and the performance was secondary.