There's an old perception that the music business is one big party featuring sex, drugs and rock and roll. But sometimes, as the above list of 7 infamous classic rock lawsuits plainly demonstrates, the reality is closer to something like "court, lawyers and legal briefs."

Legal action is a virtually unavoidable part of the cost of doing business in the high-stakes, big-money world of music. Over the years, almost every important act has been involved in at least one major court action – and sometimes many.

Money and "creative differences" – often code for "out of control creative egos" – are the usual underlying sources of rock litigation. As you'll see by click through this list of 7 infamous classic rock lawsuits, these legal actions can range from the seemingly petty and absurd, to extremely serious and precedent-setting.

Hopefully, we won't be sued next.