Musical ability not needed in Eurovision initially (5)
I believe the answer is:
annie
'musical' is the definition.
(Annie is a Broadway musical)
'ability not needed in eurovision initially' is the wordplay.
'initially' says to take the initial letters.
The initial letters of 'ability not needed in eurovision' is 'ANNIE'.
(Other definitions for annie that I've seen before include "Famous musical about orphan girl" , "- Get your Gun, musical" , "Miss Laurie" , "Musical heroine" , "Popular musical about Little Orphan" .)