The most common and most likely answer to this crossword clue is the 3 plus 5 letter word TAP DANCE
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Buddy explains!
The straight part
We know that "moving performance" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case moving performance = tap dance.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 TAP DANCE mean?
TAP DANCE verb- To perform a tap dance