Giving her a piano could be a help (4)
I believe the answer is:
leah
'be a help' is the definition.
The definition suggests a singular noun which matches the answer.
'giving her a piano' is the wordplay.
I cannot really understand how this works, but
'her' could be 'lea' and 'lea' is located in the answer.
A single letter 'h' remains which might be clued in a way I don't understand.
This explanation may well be incorrect...
'could' is the link.
Can you help me to learn more?
(Other definitions for leah that I've seen before include "Jacob's first wife (Bible)" , "Hale (anag) - wife of Jacob" , "Jacob's first wife (Gen. 29)" , "Jacobs first wife (Gen.29)" , "Rachel's sister" .)