“Hey, Paula,” a pop hit that spent months on the music charts, was back on the radio 30 years later, but in a form the song’s author never intended. Talk-show host Rush Limbaugh played a version with...

“Hey, Paula,” a pop hit that spent months on the music charts, was back on the radio 30 years later, but in a form the song’s author never intended. Talk-show host Rush Limbaugh played a version with the same music as the original but with lyrics that poked fun at President Bill Clinton’s alleged sexual misconduct with Paula Jones. Has Limbaugh violated the author’s copyright?