Joe: To answer your question, the tune is attributed to John Stafford Smith, who seems to have composed it for the Anacreon Society. Click also here, for corroboration. And for a short explanation, clack. Yet another site states that it was probably a joint work of members of the Anacreon Society, under Smith's leadership. (Sorry, forgot the clickie for that one. But here's another, just for luck, CLUCK. Actually, that's an interesting browse, looking for "Anacreon in Heaven" on the web!

I had believed that the third verse was dropped from the Natl. Anthem to keep the British happy, but this official-looking site gives proof through the note that our verse is still there!

Conclusive Proof! The third verse is part of the official Nat'l Anthem. The web site of the American Embassy to the United Kingdom says, "Their blood has wiped out their foul footsteps' pollution,"-right out in front of God and everybody! Either the Brits have a wonderful sense of humor, or they never noticed!