Narration (7)
There are a few possibilities for this:
voice-over
'narration' is the definition.
(telling is a kind of narration)
This is the entire clue.
(Other definitions for telling that I've seen before include "Revealing, significant" , "briefing" , "relation" , "Giving an order" , "Striking, having noticeable effect" .)
'narration' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for recital that I've seen before include "Verbal account" , "Public performance by a solo musician" , "Enumeration of facts" , "One's performance" , "Public performance of music" .)
'narration' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Another definition for voice-over that I've seen is " Narration to a film".)