Except as otherwise provided in this title, the separate earnings of any married person of this Commonwealth, whether these earnings are wages for labor, salary, property, business or otherwise, shall accrue to and enure to the separate benefit and use of that married person independently of the other spouse, and so as not to be subject to any legal claim of the other spouse. However, in any action in which the ownership of such property is in dispute, the person claiming such property shall be compelled, in the first instance, to show title and ownership in the property.