Ignored note and chose to swallow gallons (9)

I believe the answer is:

neglected

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'ignored note' is the definition.
'neglected' can be an answer for 'ignored' ('neglect' can be a synonym of 'ignore'). I'm unsure of the 'note' bit.

'and chose to swallow gallons' is the wordplay.
'and' becomes 'n' (common abbreviation for 'and').
'chose' becomes 'elected' (electing is a kind of choosing).
'to swallow' indicates putting letters inside.
'gallons' becomes 'g'.
'elected' placed around 'g' is 'eglected'.
'n'+'eglected'='NEGLECTED'

Can you help me to learn more?

(Other definitions for neglected that I've seen before include "Treated carelessly" , "Not cared for" , "Overgrown" , "Ignored, left undone" , "Forgot about or failed to notice" .)

I've seen this clue in The Telegraph.

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