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by tanewishly 534 days ago
It depends where you're coming from. The waltz has a very different rhythm to most other music. If you can tell (obvious) waltz music from (obvious) non-waltz music, you could identify the dance fairly easily. But if you do not know the musical difference between a waltz and a tango/foxtrot/jive/etc, then you'd need to know specifics of the dance to tell them apart - and could be fooled, eg. by pairs in ball costumes doing a different dance.