Almost as if the couple is a spring, the leader steps forward which slightly afterward causes the follower to move backward, as the follow is stepping backwards the leader then moves backwards, catching the follower and bringing her forward. This spring efect makes the dance feel very nice. Always when leading and follower the leader should lead what he is intending slightly before he does it, and the follower should always remain slightly behind the leader, he does something, then she follows. It is only a split second, but very important. The first step will be on the 2nd beat of the music.
Leader steps forward on left, while follower steps backward on right.
Leader replaces back onto Right, follower replaces forward onto left. This is the chasse. The follower does the mirror opposite. Leader steps back on right, follower forward on left. Leader replaces forward onto left, follower replaces back onto right.