Every dog has its day - meaning everyone has their time in the limelight, their period of success or power.
But compare the Arabic (and Hebrew) saying that has the opposite meaning: Every dog's day will come (Kul kalb biji yomo - كُلّ كَلْب بِيجِي يُومُه) - meaning every evil person will get there punishment some day.
I don't really mind the subject matter, and I suppose playing the piano like a jackhammer is concordant with the song's topic, and she does say dogging a lot, so I guess there's that. But is it art? After a fashion, bloody hell yeah.