"This Is the End" is a song from Mickey, Donald, Goofy: The Three Musketeers, singing for the Troubadour to Donald. It is sung to the tune of Beethoven's 5th Symphony.
You've seen how Donald gave his friends the double-cross?
He's in retreat and Pegleg Pete is now the boss!
All France in flame! (It's all in flame!)
We curse his name! (We curse his name!)
With Donald Duck, the blame!
That Donald Duck has left poor Mickey Mouse to drown (He let him drown)
And Goofy trusted him, but Donald let him down (He let him down)
We all berate him, because we hate him
He is a traitor, vacillator
He's a lousy second-rater
He's a quizzly coupe en-sizzling
He really should be russetated
How he quivered, shaked & shivered (He's completely lilly-livered!)
Mangy mallard! (He's a coward)
Donald's destiny has soured, it's the end! This is the end! The ever-laughing end!