Turn off song after end is corrupted (10)
I believe the answer is:
disenchant
'turn' is the definition.
(thesaurus)
'off song after end is corrupted' is the wordplay.
'off song' becomes 'chant' (song sung by a crowd. I am not sure about the 'off' bit.).
'after' means one lot of letters go next to another.
'corrupted' indicates anagramming the letters.
'end'+'is'='endis'
'endis' is an anagram of 'disen'.
'chant' after 'disen' is 'DISENCHANT'.
Can you help me to learn more?
(Other definitions for disenchant that I've seen before include "open someone's eyes" , "take the magic away" , "Make someone feel let down" .)