This was the first song Hammond wrote for the album. He explained to the Sunday Mail this unusual song title: "Originally it stood for Grandfather Clock but I liked it better as GfC. It reminded me of the Roald Dahl book The BfG, Big Friendly Giant, and I just liked the way it looked.
Hammond explained to the Sunday Mail the album title, which is Spanish for "How does he/she/it call you?": "We were thinking about band names and just liked the sound of it. It says, 'What's your name?' Mixed with the album cover with the anonymous cut-outs, it just seemed to fit."
Eddie Vedder often changes the words when he sings "Yellow Ledbetter." The basic story is about a guy whose brother dies in the first Gulf War. Apparently, bad news in the army is given in yellow envelopes.