Brown climbs mountains making notes (8)
I believe the answer is:
naturals
'notes' 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?
'brown climbs mountains' is the wordplay.
'brown' becomes 'tan' (tan is a kind of brown).
'climbs' says the letters should be written in reverse.
'mountains' becomes 'urals' (I've seen this before).
'tan' back-to-front is 'nat'.
'nat'+'urals'='NATURALS'
'making' is the link.
Can you help me to learn more?
(Other definitions for naturals that I've seen before include "A last run for those with innate talent" , "Turn, alas to people with inborn talents" , "Talented folk" , "People with inborn ability for something" .)