My husband and I moved into our own house. I have heard music every night since we moved in could it be a spirit?
" Could it be a spirit?!? "
Could be Santa Clause coming to town!
Without positive evidence of anything you have leaped to a nothing conclusion. Just because you think you have some unexplained phenomenon does not mean that you can just manufacture the conclusion that fits your biases.
I don't know what this is, but I do know that spirits have no positive supporting evidence behind them.