Nothing more American than a cross-fade.

When you sing the national anthem, you have to sing it with heart—loudly, emotionally charged. If you make a mistake and find yourself repeating a lyric mid-way through the song, you have no choice but to double your energy, insisting that multiple things were "gallantly streaming," until the American people believe. 

Aaron Lewis of Staind is the latest person to forget the lyrics to "The Star-Spangled Banner." He performed at last night's World Series Game 5—because Staind is the most popular band in America (in the year 2002)—and mis-sang the second line as, "what so proudly we hailed were so gallantly streaming." Of course, as comedian Eddie Izzard has noted, it's not the words that matter when you're performing the national anthem, "all that people care about is the look." Personally, I always get a little choked up during the part of the national anthem where the second gallant streaming happens.

Sources: h/t HuffPo