Large stringed instrument making lots of noise (4)
I believe the answer is:
loud
'lots of noise' is the definition.
'loud' can be an answer for 'noise' (loud noise is a kind of noise). I am unsure of the 'lots of' bit.
'large stringed instrument' is the wordplay.
'large' becomes 'l'.
'stringed instrument' becomes 'oud' (I can't justify this - if you can you should give a lot more credence to this answer).
'l'+'oud'='LOUD'
'making' acts as a link.
Can you help me to learn more?
(Other definitions for loud that I've seen before include "Brash" , "Forte" , "Tasteless; of great volume" , "Tastelessly showy" , "Flashy" .)