The most common and most likely answer to this crossword clue is the 7 letter word MAZURKA
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More clues leading to the result MAZURKA
Buddy explains!

The straight part
We know that "Dance" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case dance = mazurka.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does MAZURKA mean?
MAZURKA noun- A Polish folk dance in triple time, usually moderately fast, containing a heavy accent on the third beat and occasionally the second beat.
- A classical musical composition inspired by the folk dance and conforming in some respects to its form, particularly as popularized by Chopin.
- A figure skating move that combines elements of the toe loop and bunny-hop.