Goddess entertained by The Beatles (4)
I believe the answer is:
hebe
'goddess' is the definition.
(Greek goddess)
'entertained by the beatles' is the wordplay.
'entertained by' indicates a hidden word (the clue hosts or entertains the answer).
'HEBE' is hidden within 'the beatles'.
(Other definitions for hebe that I've seen before include "Zeus's daughter; shrub" , "Cup-bearer of the gods and NZ plant" , "Youth personified" , "Who dished out divine drinks" , "Greek goddess of youth, wife of Hercules" .)