Can singing termed as property

Disclaimer: This answer is for your amusement only. I am not a lawyer, and this is not legal advice.

Yes. A performance is intellectual property, and you can take legal action against anybody who makes an unauthorized recording of the performance, *BUT* I think you have to have put the audience on notice first. That is to say, you have to make an announcement beforehand, or put in the program, "Unauthorized recordings of tonight's performance..." If you just start singing in the shower, and your SO makes a recording of it and sells it for a million dollars, then I don't know whether you have any legal claim to the money or the recording.