“Andrew Vactor was facing a $150 fine for playing rap music too loudly on his car stereo in July. But a judge offered to reduce that to $35 if Vactor spent 20 hours listening to classical music… [he] lasted only about 15 minutes.” The idea of the sentence “was to force Vactor to listen to something he might not prefer, just as other people had no choice but to listen to his loud rap music.”