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Longways duple properA:
Bars 1-4: 1st man and 2nd woman right forearm swing.A:
Bars 5-8: 2nd man and 1st woman ditto.B:
Bars 1-4: 1s chassay or lead down set 2 steps and back; cast down round 2s.B:
Bars 5-8: All swing (cross-hand hold).
I say "Cross-hand swing" because it's quick to say, but what I recommend is a right forearm hold (as in A) and then left hands joined above (or below) - it's more controlled than a cross-hand swing.
Make sure people don't dig their thumbs in with a forearm hold!
Music: 16-bar scottisches or hornpipes (e.g. a 32-bar hornpipe played without the usual repeats). Here's the standard tune and some others