Please define non jewish music.
Is it, music composed by a non jew. This would include compositions by beethoven, bach, mozart and a number of the tunes played at many heimish simchas.
Is it a reference to a song whose lyrics were written by a non jew, to be sung along to music composed by a non jew?
Is it a song whose lyrics do not convey jewish values, or worse, promote non jewish values no matter who wrote them?