Listening to music can provide a temporary escape fron painful and overwhelming feelings and identify painfull underlying feelings.
By turning your focus to lyrics and rhythm you can focus on something other than distress. It could help you regulate and process upsetting emotions and get in touch with how you feel.
Music can also help you pause the urge to self harm long enough to work through your feelings and identify ways to cope. Choose the songs that match your mood. Even an audio book or spoken word podcast can offer a comforting distraction