On the organ, it makes a note ring out! (5)
I believe the answer is:
pedal
'on the organ it' is the definition.
I can't tell whether this defines the answer.
'a note ring out' is the wordplay.
'a note' becomes 'd' (musical note).
'ring' becomes 'peal' (synonyms).
'out' is an insertion indicator.
'd' put into 'peal' is 'PEDAL'.
'makes' acts as a link.
Can you help me to learn more?
(Other definitions for pedal that I've seen before include "Plead for bicycle propeller" , "Foot-lever" , "Of or relating to the feet" , "sustained note" , "work with press from Oxford?" .)