Largely superfluous note about Motown (7)
I believe the answer is:
detroit
'motown' is the definition.
(I've seen this before)
'largely superfluous note' is the wordplay.
'largely' means to remove the last letter (most but not all of the letters).
'superfluous' becomes 'de trop' (synonyms).
'note' becomes 'it' (I can't justify this - if you can you should give a lot more credence to this answer).
'detrop' with its final letter taken off is 'detro'.
'detro'+'it'='DETROIT'
'about' acts as a link.
Can you help me to learn more?
(Other definitions for detroit that I've seen before include "U.S. city also known as Motown" , "Michigan car city" , "Where cars are made" , "Major Great Lake port" , "US motor city" .)