Hubris

The only thing you got in this world is what you can sell. And the funny thing is that you’re a salesman, and you don’t know that. —Charley, Death of a Salesman

All Willy ever wanted in life was to make something of himself - the American dream. He wanted to be well-liked by his coworkers, idolized by his kids, loved by his wife, and successful like his father and brother. These things constantly haunted Willy. He knew that a salesman could be an honorable job, just not the way he did it. Will'y tragic flaw - hubris - was that he couldn't get passed the failings in his life. His life revolved around the image of a dream that infected his mind. He constantly relived aspects of his life that he wasn't proud of or that involved people he was jealous of. The story of Mr. Singleman and how he died the "death of a salesman" - with lots of friends who respected him at his funeral and an honest living left behind for his family- was exactly what Willy was longing for. That fulfillment never came for him, so he figured his life was not worth anything. For that reason, he killed himself to ensure a better life for his family. 

One Last Hope - Hercules

This song talks all about different heroes who couldn't succeed

because of their tragic flaw. He has no hope in a hero who can truly

live up to expectations - just as Willy gives up hope on his own life.