Crossword Genius

Large journal exchanging two letters for Scottish player? (8)

Ross

I believe the answer is:

bagpiper

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'player?' is the definition.
(bagpiper is a kind of player)

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for bagpiper that I've seen before include "Wind musician" , "(Scottish) musician" , "One blows out air" , "Pibroch player" , "Player of traditional Scottish musical instrument" .)

I've seen this clue in The Times.
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