ence - Image" ></a>           
            <hr>
        </div>
        
        <h1>Writing Classes That Interact</code></h1>
			<p>
				You already know how to create your own types.  Now, you will learn how to create two types that are related to each other.
			</p>
<h2>
Class <code>Song</code>
</h2>

	<p>
		We have already created a class <code>Song</code>. As shown in the constructor, a <code>Song</code> has an artist, a title, and a duration in minutes and seconds. Our <code>Song</code> cl