From Spain, troubadour's first few bars (5)
I believe the answer is:
intro
'first few bars' is the definition.
(as in bars of music)
'from spain troubadour's' is the wordplay.
'from' says the answer is hidden in the clue.
'INTRO' is hidden within 'spain troubadours'.
(Other definitions for intro that I've seen before include "Opening passage (abbr)" , "First bars of a musical composition" , "Musical opening" , "Opening instrumental passage of song" , "Opening notes" .)