Sing a mean tune, kid
Sock 'em in the gut, yeah, yeah, yeah
Don't you ever let your mama catch you cryin'

Play the bad song, kid
Everyone's the blues yeah, yeah, yeah
And the people never know you're only lying
[ Lyrics from: http://www.lyricsfreak.com/c/chicago/sing+a+mean+tune+kid_20029875.html ]
What a scary song, kid
Never heard before yeah, yeah, yeah
Soon the groupies will start rolling by your door

Burn the groove to death, kid
Nail 'em to the cross yeah, yeah, yeah
Till you're not a super pop star any more