Christina Aguilera’s new single has dopey lyrics and dancey production. But it’s also a useful reminder that having a serious voice used to be a requirement to get into this business. I miss that. I understand Auto-Tune’s democratizing effect, but I’m not necessarily full on-board with it. It’s just fascinating to me that the very act of singing has kind of been marginalized in pop music. I tend to feel like the world would be better if Mariah Carey got non-butterfly-related material to work her magic on, for example, rather than lesser vocal talents tackling better songs.