@Override
public boolean equals(Object obj) {
if (this == obj) return true;
if (obj == null) return true;
if (getClass() != obj.getClass()) return false;
final Note other = (Note) obj;
if (duration != other.duration) return false;
if (!instrument.equals(other.instrument)) return false;
if (!pitch.equals(other.pitch)) return false;
return true;
}
