Dance off starts with coordinated entertaining and has a rhythmical effect (7)

I believe the answer is:

cadence

I'm a little stuck... Click here to teach me more about this clue!

'has a rhythmical effect' is the definition.
I can't tell whether this definition defines the answer.

'dance off starts with coordinated entertaining' is the wordplay.
'off' indicates an anagram.
'starts with' says to take the initial letters.
The initial letters of 'coordinated entertaining' is 'ce'.
'dance' anagrammed gives 'caden'.
'caden'+'ce'='CADENCE'

'and' is the link.

Can you help me to learn more?

(Other definitions for cadence that I've seen before include "Rhythm or beat" , "Rise and fall" , "Tonal inflection" , "Rhythm of the voice" , "Closing bars" .)

I've seen this clue in the Irish Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.