The most common and most likely answer to this crossword clue is the 5 letter word EPODE
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The straight part
We know that "Lyric poem" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case lyric poem = epode.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 EPODE mean?
EPODE noun- The after song; the part of a lyric ode which follows the strophe and antistrophe.
- A kind of lyric poem, invented by Archilochus, in which a longer verse is followed by a shorter one.