Make a new adjustment for the back row, by the sound of it (7)
I believe the answer is:
realign
'make' is the definition.
The answer and definition can be both related to change as well as being verbs in their base form.
Perhaps they are linked in a way I don't understand?
'a new adjustment for the back row by the sound of it' is the wordplay.
'a new adjustment for' becomes 'aer' (I can't justify this - if you can you should believe this answer much more).
'the back' is a reversal indicator.
'row' becomes 'line' (as in a row of things).
'by the sound of it' shows a homophone (sound like).
'line' is a homophone of 'lign'.
'aer' in reverse letter order is 'rea'.
'rea'+'lign'='REALIGN'
Can you help me to learn more?
(Other definitions for realign that I've seen before include "Regroup" , "Make new alliances" , "shift in position" , "Change to a new position" , "Arrange again" .)