Rolling Stone:

In the five years since a court ruled that “Blurred Lines” infringed on Marvin Gaye’s 1977 “Got to Give It Up,” demanding that Thicke and Williams fork over $5 million to the Gaye estate for straying too close to the older song’s “vibe,” the once-sleepy realm of music copyright law has turned into a minefield. Chart-topping musicians have been slapped with infringement lawsuits like never before, and stars like Ed Sheeran and Katy Perry are being asked to pay millions in cases that have many experts scratching their heads. Across genres, artists are putting out new music with the same question in the backs of their minds: Will this song get me sued?

To me, this mirrors the patent trolls in tech. Achieve a certain level of success with a technology, or a song, and you’ll pop up on troll radar.