The most common and most likely answer to this crossword clue is the 5 letter word DITTY
I've seen this crossword clue in Independent
D
I
T
T
Y
More clues leading to the result DITTY
- Song that's amusing, wife turning to daughter
- Song of amateur construction, inwardly dry
- Races through homework, a simple piece
- Doing without professional help bags IOM trophy – some catch!
- Simple song Dutch cat cut originally
- Musical box for a sailor?
- a Simple song of two tenors in amateur production
- Director casting wife in humorous song
Buddy explains!

The straight part
We know that "Simple song" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case simple song = ditty.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 DITTY mean?
DITTY noun- A short verse or tune.
- A saying or utterance, especially one that is short and frequently repeated.
- To sing; to warble a little tune.