The most common and most likely answer to this crossword clue is the 5 letter word PROEM
I've seen this crossword clue in The Times
P
R
O
E
M
More clues leading to the result PROEM
- Introduction to record in creative work — here?
- Tricky matter, dropping Bale for kick-off
- First piece in concert conveying energy
- Intro's fifth note stopping concert
- Introduction of literary work about Rigoletto’s opening
- Preamble, introduction to read in literary composition
- Earliest bit of Elgar in concert overture?
- Preface for this writer written retrospectively
- Opening for setter returning
- Introduction to latest of style in concert
Buddy explains!

The straight part
We know that "First piece" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case first piece = proem.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 PROEM mean?
PROEM noun- An introduction, preface or preamble.