The most common and most likely answer to this crossword clue is the 4 letter word FUNK
I've seen this crossword clue in Independent
F
U
N
K
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 = funk.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 FUNK mean?
FUNK noun- Foul or unpleasant smell, especially body odor.
- A style of music derived from 1960s soul music, with elements of rock and other styles, characterized by a prominent bass guitar, dance-friendly sound, a strong emphasis on the one, and much syncopation.
- To emit an offensive smell; to stink.
- To envelop with an offensive smell or smoke.
- Spark.
- Touchwood, punk, tinder.
- Mental depression.
- A state of fear or panic, especially cowardly.
- One who fears or panics; a coward.
- To shrink from, or avoid something because of fear.
- To frighten; to cause to flinch.