Made up a song in German (4)
I believe the answer is:
lied
'song in german' is the definition.
'lied' can be an answer for 'song' (type of German song). I'm not certain of the 'in german' bit.
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for lied that I've seen before include "Was economical with the truth" , "was responsible for terminological inexactitude" , "Deceived with words" , "German romantic recital piece" , "Told untruths; song" .)