Groucho's tattooed lady of song (5)
I believe the answer is:
lydia
'groucho's tattooed lady of song' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for lydia that I've seen before include "where Croesus was king" , "Woman" , "Girl's name - ancient kingdom in Asia Minor" , "Roman province" , "Old kingdom" .)