I think the summer one might be part of the Rencontre festival which must be starting this weekend; I know it's the beginning of August in Montreal.

I see Gilles Garrand and his wife Louise in the mix (he's playing melodeon; dark grey beard) so I suspect he's behind it. They're also the parents of Alexandre who is one of the Genticorum trio. I don't have a contact for him but he's on Facebook.

They certainly take best advantage of the architecture in Montreal - or in parts of it. Some neighbourhoods are known as 'Balconville' because every building - residential and other - has tiers of balconies and outdoor stairs. (Michel Trembley titled one of his early plays 'Balconville'; excellent play.)

I wonder if the careful placement of the dancers played a role in time-keeping? Must have been particularly tricky in that university building.

sian