This came to me after reading someone's notes on watching lotr, and they said Gandalf could probably hear Frodo's cries as he fell.
Regret
The fire is falling. I see it starting to spiral downwards. A huge sigh of relief heaves my chest as I look downwards at my defeated foe. I turn back towards my company, watching me in concern from the end of the bridge. I see their faces taut with worry. But then something fiery and hot curls around my ankle and I feel it burn me, and pull me down. The Balrog, as its falling act, will not let itself go down alone. The fiery tongue leaves my ankle, but I am already hanging over the edge. My fingernails scrabble at the stone. Amazing. For all my years wandering this earth, it is as if I will be felled...by tripping! I feel my hold weakening. Looking up I see their faces, quickly. The expressions are forever etched into my memory. Legolas' fair face filled with confusion. Aragorn's, fear filling his eyes, a rare thing for him. Boromir, the man I knew from when he was a child, shocked. Gimli, ready to avenge. The two mischievous hobbits, Meriadoc and Peregrin are stunned. I think they have never been so at a loss in their lives. Samwise, I can tell, does not believe it. In only a few seconds I see them, and as my gaze swings to the horrified Frodo, I feel the stone crumbling.
"Fly, you fools!" I cry to them, and then it gives way. I am falling. Spinning, turning. As I begin to fall I hear a wail from above that was uttered by the Ringbearer.
"NOOOO!"
"Aragorn!" cries a fading voice. Again the keening cry of Frodo, now joined by Pippin and Sam. Merry lets out a wordless cry of his own, but now I can barely hear them. They are fading in my ears. Rushing wind fills them now as I fall. The last thing I, Gandalf the Grey, hear of my companions is the cry of the Ringbearer as he believes me dead. And so I will be. The Balrog falls below me now. And I have my sword with me, so I will now...do...battle. And still I carry with me Frodo's cry.