Music - Hearing music in your dreams has positive connotations. Music is healing to the soul, and as you are listening to it in your dream, you may be connected to the wonderful, creative spirit or flow of life suggesting a degree of inner harmony and emotional expression. Take note of the emotional tone; sad, sweet, tragic. This is an emotion speaking to you.

Kiss/Kissing - Depending on how the kiss makes you feel. If it left you with a positive feeling, it represents the acceptance of what, or who, is being kissed....or the acceptance of what or who they represent.

The stranger - If the person reminds you of someone you know, think about your relationship with him or her, and the issues that the dream has brought up, or how you relate to the person that is being represented. If these people are totally unrecognizable (they don't remind you of anyone you know)... they would represent different, and unknown, aspects of yourself. They are extensions and projections of your own subconscious, and personality. Alternately, a stranger may represent an unknown fear, or danger, you feel in your waking life.

Human beings (male and female alike), are curious, questioning, and have a need for information, and spiritual expansion. We all have masculine and feminine aspects (or sides) to our subconscious.
The masculine aspects would be the part of ourselves that we view as brave, strong, stubbornness, authoritative, logical...etc.
The feminine aspects would be the part of ourselves that we view as emotional, nurturing, tender, yielding, sensitive...etc.
When we dream, all the different parts of our 'inner selves' interact, and 'come alive', as though they were different people.

It may be that there is a part of yourself is becoming more familiar to you and that you are in harmony with this other side, and are becoming more accepting of it.

Hope I could give some insight, best wishes!