If you were on a game show and had to recite an entire song from memory to win money, what song would you choose?

And you have 4 choices, only one to choose:

50,000 dollars (short song, 1–2 minutes)

500,000 (medium song 3–4 minutes)

1 million (long song, 5–6 minutes)

1 billion (7–10 minutes long)

I would go for 1 billion and recite American Pie by Don McLean.

Note: I realize that this is an extremely random question ;)