Go down, we hear, in togetherness (4)
I believe the answer is:
sync
'go down we hear in togetherness' is the definition.
I can't judge whether this definition defines the answer.
'go down we hear' is the wordplay.
'go down' becomes 'sink' (synonyms).
'we hear' shows a homophone (sound like).
'sink' is a homophone of 'SYNC'.
Can you help me to learn more?
(Other definitions for sync that I've seen before include "Agreement in time" , "Relationship when things occur at the same time" , "In which one's matching" , "In which things occur simultaneously" , "Unison (abbrev.)" .)