{{explanation}}
2 chords:  2nd chord 1s & 3s face down, 2s & 4s face up

1-8
: 1s+2s also 3s+4s set & turn RH, 2s face down, 3s face up;  2s+3s set &
  turn RH (Men's side right arm elbow turn as "Buchan Eightsome Reel")
9-16
: 1s cross, cast (2s step up); 1s cross, cast (3s step up).  2 3 1 4
17-20
: 1M sets advancing to 4L & they change places RH **while** 2s+3s dance RH
  across
21-24
: 1L sets advancing to 4M & they change places RH **while** 2s+3s dance LH
  across.  2 3 (4) (1)
25-32
: 1s dance 1/2 Fig 8 up round 4s; 4s dance1/2 Fig 8 up round 3s.
  End 2 3 4 1