Song with something wrong about a couple of lines (6)
I believe the answer is:
ballad
'song' is the definition.
(I know that ballad is a type of song)
'wrong about a couple of lines' is the wordplay.
'wrong' becomes 'bad'.
'about' means one lot of letters goes inside another.
'couple of lines' becomes 'll' (two abbreviations for line).
'a'+'ll'='all'
'bad' going around 'all' is 'BALLAD'.
'with something' is the link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for ballad that I've seen before include "Poem telling a story" , "Slow sentimental song" , "Love song" , "Slow romantic song" , "Song type" .)