public static void fadeIn(Music music, float volumeRaise ,float endVolume, boolean background){

		if(!music.playing()){
			if(background){
				music.loop(1, 0);
			}else{
				music.play();
			}
		}
		
		
		if(music.playing() && music.getVolume() < endVolume){
			music.setVolume(music.getVolume() + volumeRaise);
		}
	}