I would add charitable donations, but no tip, for song (5)
I believe the answer is:
psalm
'for song' is the definition.
(I've seen this before)
'i would add charitable donations but no tip' is the wordplay.
I cannot quite see how this works, but
'i' could be 'a' and 'a' is located in the answer.
'add' could be 'ps' and 'ps' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for psalm that I've seen before include "Sacred song from Old Testament" , "OT song" , "Sacred song of praise" , "Lamps for a sacred song" , "Devotional song/hymn" .)