Even hip hop's prodigal nephew can get sued. Kendrick Lamar was recently named in a suit for his Section.80 track "Keisha's Song (Her Pain)," released in 2011. Woolfsongs Limited claims he didn't get proper clearance from The Alan Parson's Project for use of their tune "Old & Wise." That's not to say, however, that K-Dot actually sampled the U.K. rock band (leave that dispute to the lawyers).
Meanwhile, the good kid is far from the first artist to get called to the courts. Read on for more circumstances that caused music stars and estates to wage a legal battle over copyrights, unpaid services and more.