The most common and most likely answer to this crossword clue is the 6 letter word JINGLE
I've seen this crossword clue in Independent
J
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More clues leading to the result JINGLE
- Catchy tune from Jack by the fireplace
- Judge recording to be without opening catchy tune
- Joking line not OK, in verse for ad
- Commercial music
- Run first of journals for society — producing a memorable number?
- Record in which Jack replaces son providing catchy number
- Metallic sound in tune
- Catchy tune‘s beginning to jar and grate
- Commercial song that one often hears with bells
Buddy explains!

The straight part
We know that "catchy tune" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case catchy tune = jingle.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 JINGLE mean?
JINGLE noun- The sound of metal or glass clattering against itself.
- A small piece of metal attached to a musical instrument, such as a tambourine, so as to make a jangling sound when the instrument is played.
- A memorable short song, or in some cases a snippet of a popular song with its lyrics modified, used for the purposes of advertising a product or service in a TV or radio commercial.
- A carriage drawn by horses.
- A brief phone call; a ring.
- A jingle shell.
- Coin money.
- To make a noise of metal or glass clattering against itself.
- To cause to make a noise of metal or glass clattering against itself.
- To rhyme or sound with a jingling effect.