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Oscar: try using steps that are slow or quick, low or high, long or short, and you can make your dance so much more interesting without even learning anything new.
The problem with his classes is not that he teaches anything very difficult, although it's usually new and interesting, but that there have almost always been more men than women, and even if he asks everyone to change they are often dancing as couples and don't want to. Fair enough, but I tend to get less practice time. He does teach with Mary Ann and his daughter, who are very helpful, although they tend to be busy helping the dancing couples.