Do swans sing as they are dying?

they don't it was long a myth that the mute swans is silent all its life until it is about to die, when it lets out a fantastic song. the term swan song now refers to the last act by a creative person, for example a musician or artist, which is preformed or displayed shortly before they retire or die.

Also it can be used in politics, meaning an assassination, or just anyone in general doing something great before death. It's also the name of a Hollywood undead album do to the fact that it was there beginning, but they thought it might be there end as well.