Soul stirring finale overcoming throng (5)
I believe the answer is:
ghost
'soul' is the definition.
(I know that ghost is a type of soul)
'stirring finale overcoming throng' is the wordplay.
'finale' says to take the final letters.
'overcoming' says to put letters next to each other (some letters are written over others).
'throng' becomes 'host' (host is a kind of throng).
The last letter of 'stirring' is 'g'.
'g'+'host'='GHOST'
(Other definitions for ghost that I've seen before include "Writer who gives the credit of authorship to someone else" , "Lay down life for another in this" , "21 [WRAITH]" , "insubstantial presence" , "Supernatural apparition" .)