Berlin song spun a furphy (4)
I believe the answer is:
lied
'berlin song' is the definition.
(I've seen this in another clue)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for lied that I've seen before include "Did not speak the truth" , "German art song" , "German romantic recital piece" , "piece of music" , "untrue" .)