To hear harmonious and soothing music in your dream signifies prosperity and pleasure. You are expressing your emotions in a positive way. Music serves to heal the soul.
To hear discordant or out of tune music in your dream signifies unhappiness, lack of harmony, and troubles in your relationship or domestic life.
Specific genres of music are personal to every dreamer. For someone who loves country music and hears country music in their dream, the interpretation will be different for someone who hates country music. If the genre of music is something you like, then the music is offering you some advice. If the genre of music you hear in your dream is something you hate, then it means that you are refusing or rejecting some advice.