Peaceably, it's offered so softly (3)
I believe the answer is:
sop
'peaceably it's offered' is the definition.
I can't tell whether this defines the answer.
'so softly' is the wordplay.
'softly' becomes 'p' (short for piano, musical term for softly).
'so'+'p'='SOP'
Can you help me to learn more?
(Other definitions for sop that I've seen before include "Propitiatory offering" , "Small concession" , "Piece of bread dipped in liquid, or a concession" , "Appeasing gift" , "Concession made to pacify troublesome person" .)