Liberace's instrument (5)
I believe the answer is:
piano
'liberace's instrument' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for piano that I've seen before include "Softly, musically speaking" , "entertain with this softly" , "Musical instrument - softly, please" , "Soft, softly (music)" , "In musical notation, this means softly" .)