For some songs (mainly covers) it can be helpful to tell jaikoz to use different values when searching for lyrics.
e.g. for the song Metallica/Whisky in the jar use the value artist=thin lizzy
Give different valus for lyrics finder
But how would this be workable, how would Jaikoz know what to search on. I think if you know the alternative it might be easier to just modify the relevent tag or manually paste in the lyrics.