It's turned soft at the end (3)
I believe the answer is:
tip
'the end' is the definition.
(tip is a kind of end)
'it's turned soft' is the wordplay.
'it's' becomes 'it' (I've seen this in other clues).
'turned' says the letters should be written in reverse.
'soft' becomes 'p' (musical abbreviation for 'piano'**).
'it' written backwards gives 'ti'.
'ti'+'p'='TIP'
'at' acts as a link.
(Other definitions for tip that I've seen before include "The rubbish dump" , "Dump; hint" , "Clue" , "Useful suggestion" , "List, gratuity" .)