A classical style (5)

I believe the answer is:

alpha

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

'a classical style' is the definition.
The answer and definition can be both related to communication as well as being singular nouns.
Perhaps there's a link between them I don't understand?

This is all the clue.

Can you help me to learn more?

(Other definitions for alpha that I've seen before include "European character" , "First letter of the Greek alphabet" , "Leading Greek character" , "Top grade" , "First in sequence" .)

I've seen this clue in The Globe and Mail.

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.