{{explanation}}
2 chords - 2nd chord 3s & 4s cross to opposite side

1-8
: 1s+2s also 3s+4s dance 6 bars of the Tourbillon :

: 1s & 2s (3s+4s) turn partners 2H 1/2 way, 1M & 2L (3L & 4M) lead
  partners on 1 place clockwise to end 1s (3s) on Ladies side & 2s (4s)
  on Men's side, 1s set to 2s, 3s set to 4s

: 1s & 2s (3s+4s) 1/2 turn partners 2H, 1L & 2M (3M & 4L) lead partners
  on 1 place to end (2) (1) 4 3 & All set
9-16
: 2s+1s also 4s+3s dance RH across & LH across
17-24
: 1s & 4s NHJ with partner, dance out of ends (1s up, 4s down), separate &
  cast down/up to 2nd/3rd place; 1s+4s dance 1/2 R&L (no polite turns)
25-32
: All dance 1/2 reels of 4 on sides; All set twice.  3 1 (4) (2)