The dances are performed at public events by clubs that practice the sequences. Occasionally they seem to have open dances in public settings, or in a party setting with food. In some of the videos, the moves from the quadrilles are danced with long lines of facing couples (in Beckett formation, as someone pointed out), without progression. These events bring together dancers from more than one club.
I should warn you that you may well be delighted by watching these videos, and find it hard to stop.
Richard
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Richard HopkinsMiddlebury, VT
850-544-7614hopkinsrs@comcast.net