The most common and most likely answer to this crossword clue is the 6 letter word CHACHA
I've seen this crossword clue in The Guardian
C
H
A
C
H
A
Buddy explains!
The straight part
We know that "Dance music" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case dance music = chacha.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 CHACHA mean?
CHACHA noun- A traditional Georgian clear strong liquor distilled from pomace.
- A type of cylindrical metal rattle, derived from an instrument in the Haitian musical tradition, and used to play rhythm in certain Cuban genres (and in other nearby countries).
- An uncle, especially one's father's younger brother.