Kevin Ryan “went into his home studio and engineered a sort of retro mash-up of two of his favorite artists, Bob Dylan and Dr. Seuss. … He registered a domain name, dylanhearsawho.com, and in February posted his seven tracks online.” Then came the cease-and-desist letter. “As it happens, if Ryan was going to get into a fight over the legal limits of parody, he couldn’t have run into a better-prepared opponent than Dr. Seuss Enterprises.”