Music cannot trigger a bipolar mood episode. But it can trigger other emotions inside you. If its working for you so you keep safe and is making you feel good, then that is fantastic and keep using it as a coping strategy. Music can put you in a good mood but I have never ever heard a case of it causing a manic episode.

If you are already in an episode, either up or down, music can intensify these emotions. But causing it? No.