Sent away with union songs (5)

I believe the answer is:

tunes

I'm a little stuck... Click here to teach me more about this clue!

'songs' is the definition.
The answer and definition can be both related to communication as well as being plural nouns.
Maybe you can see a link between them that I can't see?

'sent away with union' is the wordplay.
'away with' indicates an anagram (letters move away from their original places).
'union' becomes 'u' (common abbreviation as in 'Trades Union Congress').
'sent' with its letters mixed up with 'u' can make 'TUNES'.

Can you help me to learn more?

(Another definition for tunes that I've seen is " Airs, melodies".)

I've seen this clue in The Mirror.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.