The “Harlem Shake” is the No. 1 song on the Billboard Hot 100 for the second week in a row, a top 10 iTunes download and the meme of the moment. Millions are watching variations on the “Harlem Shake” ...

More than a decade ago, a guy named Jayson Musson, then a Philly art student, got into a bloody fight with a guy who'd been painting over his graffiti around town. He wrote a song about the fight, and ...