Told untruths about the song (4)
I believe the answer is:
lied
I believe this is a double definition.
'told untruths' is the first definition.
(I've seen this before)
'the song' is the second definition.
(type of German song)
'about' is the link.
(Other definitions for lied that I've seen before include "Told untruths; song" , "Song; fibbed" , "Told an untruth" , "piece of music" , "refused to admit it" .)