While 85% of Billboard Top 100 songs of the 1960s were written in a major key, that preference no longer holds true today. Minor key songs have become the majority, representing about 60% of modern hits. Scientific American’s Helen Lee Lin delves into this, and other documented changes in musical preference. The research is totally interesting, even if the scientists don’t seem to have a good idea of what it means. Maybe we’re depressed. Or maybe we’re just trying to sound more mature. Here’s the original paper. (Via ScienceGoddess)