Symphony of Win
The exact opposite of Crescendo of Suck. When WIN just doesn't express the awesomeness of something.
Meeting a girl in a club who not only buys her own drinks, but is willing to go home with you.

Finding a 50 tucked in your couch cushions when you are down to your last 75 cents.

Finding out you are NOT the father.

All those and more fit SYMPHONY OF WIN