Like the piper you need for some lieder at the piano (4)
I believe the answer is:
pied
'like the piper you' is the definition.
I can't tell whether this defines the answer.
'for some lieder at the piano' is the wordplay.
'for' becomes 'i' (I am not sure about this - if you are sure you should believe this answer much more).
'some' says to take the centre.
'at' is a charade indicator (letters next to each other) (I've seen this in other clues).
'the piano' becomes 'p' (musical abbreviation).
The central letters of 'lieder' are 'ed'.
'i'+'ed'='ied'
'ied' put after 'p' is 'PIED'.
'need' is the link.
Can you help me to learn more?
(Other definitions for pied that I've seen before include "With patches coloured differently" , "featuring two colours" , "Foot over water [in]" , "varying in colour" , "Piper thus portrayed once" .)