Minimum expected in piano lesson surprisingly (2,4)
I believe the answer is:
no less
'minimum' is the definition.
(I have seen 'Bare minimum ' mean 'no less' so perhaps 'minimum' could also mean 'no less')
'in piano lesson surprisingly' is the wordplay.
'in' indicates the answer is hidden within the clue.
'NO LESS' is hidden within 'piano lesson surprisingly'.
'expected' is the link.
This may not be right. It may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for no less that I've seen before include "would you believe!" , "praise, ironically" , "Expression of admiration" , "indeed!" , "as important" .)