Song lyrics getting simpler, more repetitive, angry and self-obsessed study

Lyrics have a tendency to become more simple and repetitive, with a decrease in positive and joyful expressions and a rise in anger, disgust, or sadness.

Over the past 40 years, lyrics have become more self-obsessed, with an increase in the usage of words like 'me' or 'mine'.

Read at www.theguardian.com