Crossword Genius

Officer's given cold beer, getting notes in order (5,5)

Ross

I believe the answer is:

major scale

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

'notes in order' is the definition.
The definition and answer can be both related to communication as well as being singular nouns.
Maybe they are linked in a way I don't understand?

'officer's given cold beer' is the wordplay.
'officer's' becomes 'majors' (type of military officer).
'given' is a charade indicator (letters next to each other).
'cold' becomes 'C' (eg on taps).
'beer' becomes 'ale' (type of beer).
'majors'+'c'+'ale'='MAJOR SCALE'

'getting' acts as a link.

Can you help me to learn more?

(Another definition for major scale that I've seen is " Octave such as C, D, E, F, G, A, B, C".)

I've seen this clue in The Independent.
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