'American Idol' ruined how we listen to singers. Did Auto-Tune fix it?

In our young century, public standards for "good singing" have been reshaped by two unrelated phenomena: "American Idol" and Auto-Tune.The former is a televised singing contest for young amateurs with big lungs and big dreams. The latter is a piece of recording software that corrects wobbly pitches, sometimes at the expense of a singer's humanity. But listen. In 2016, oodles of vocalists who grew up watching "Idol" sound like over-emotive subnormals, while Auto-Tune's most artful users are among...