Vigorous, but not pound on piano? So inadequate (8)
I believe the answer is:
pathetic
'inadequate' is the definition.
(thesaurus)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for pathetic that I've seen before include "Distressing" , "Poignant or hopelessly inadequate" , "Hapless, miserable" , "Sort of fallacy" , "Lacking forcefulness" .)
