text: 
  class MusicBox {
  	constructor(playlist) {
  		this.audio = null;
  		this.playlist = [ ...playlist ];
  	}
  
  	addToPlaylist(songPath) {
  		this.playlist.push(songPath);
  	}
  
  	play(i = 0) {
  		this.audio = new Audio(this.playlist[i]);
  		this.audio.play();
  	}
  }
  
  module.exports = MusicBox;
  