So, popular music is ever increasingly narcissistic and mean.
Comparing popular music from 1980 to that from 2007, researchers found far more references to 'I' and 'me' in the more recent songs, and more 'anger-related words' and a corresponding decrease in references to 'we' and 'us' and less expression of positive emotions.
Sample song titles from 2008 -
'Greatest Man the Ever Lived' and ' The World Should Revolve Around Me'
All from the NY Times article ("A Generation's Vanity, Heard Through Lyrics"), April 26, 2011, p. D1.