* 
	MusicList {
	    { 0, // group id
                { 0, "music1", // music_id, music_name
                  1, "music2", 
                     ...
                  N, "musicN"
                }
                {
		  N+1, "musicN+1",
                    ...
                }	
	}
*


MusicList {
    { 0, 
       {  	 
       }
    }
}