Is the piano one soft? (5)
I believe the answer is:
stool
'piano one soft?' is the definition.
I can't tell whether this definition defines the answer.
'is the' is the wordplay.
I cannot quite see how this works, but
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is located in the answer.
The remaining letters 'sool' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for stool that I've seen before include "Motion" , "Armless seat" , "Three-legged backless seat" , "Small seat" , "Simple seat" .)