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https://www.advancedcustomfields.com/resources/relationship/
- create artists custom post type
- create pressrelease custom post type
- create a custom field for artists called: press_releases
- When you create press releases name the titles according to the relationship with 
the artist, ie: press release for ichigo
- then in Artists custom post type you will see a field of press releases, this enables
you to select a post of this press release type and associate with this artist, like 
displaying an excerpt below the content of this artist with a link to
/pressrelease/nameofpressrelease

1) artists custom post type:

get_header(); ?>
<!--   SINGLE-ARTISTS.PHP   -->
<div class="col-md-12">

	<div class="col-md-4">
		
	<div class="artist_name">
		<?php the_field('name') ; ?>
	</div>
	
	<div class="artist_series">
		<?php the_field('artist_number') ; ?>
	</div>
	
	<div class="artist_series_sub">
		<?php  the_field('series') ; ?>
	</div>	
		
	<div class="artist_details">
		<?php  the_field('details') ;  ?>
	</div>	
	
	<div class="artist_description">
		<?php the_field('description')	 ;  ?>
	</div>
		
	
	</div>
	
	<div class="col-md-8">
		<img src="<?php the_field('image') ?>">  
	</div>

</div>


<div class="col-md-12  press_cont">
	
// NOTE HERE BEGINS the 'relationship' field called: press_releases
	<div class="press_release">PRESS RELEASE:</div>	
	<?php	
		// get press release relationship and associate with this artist:
		$posts = get_field('press_releases');
		
		if( $posts ): ?>
		   
		    <?php foreach( $posts as $post): // variable must be called $post (IMPORTANT) ?>
		        <?php setup_postdata($post); ?>
		        	<div class="press_excerpt"><?php the_excerpt()  ;  ?></div>
		            <a href="<?php the_permalink(); ?>"><?php the_title(); ?></a>
		 		        
		    <?php endforeach; ?>
		    
		    <?php wp_reset_postdata(); // IMPORTANT - reset the $post object so the rest of the page works correctly ?>
		<?php endif; ?>	
	

	
	
</div>

<?php get_footer(); ?>


2) craete archive-pressrelease.php

<?php get_header(); ?>
<!--  ARCHIVE-PRESS RELEASES.PHP   -->
	
	<div class="content-padder">
		
		<?php  // 
		    $artist_press = new WP_Query(array('post_type' => 'pressrelease' ) );

		    while ($artist_press->have_posts()) : $artist_press->the_post();
		     	get_template_part( 'content', 'press-releases' );
		    endwhile;
		?>

	</div><!-- .content-padder -->


<?php get_footer(); ?>



3)  content-pressrelease.php:

<div class="news_cont">
	<div class="col-md-6">
		<h4 class="page-title"><a href="<?php the_permalink(); ?>" rel="bookmark"><?php the_title(); ?></a></h4>
		<div class="exibition_date"><?php the_time('F jS, Y') ?></div>
		<?php the_excerpt(); ?>
		<?php the_field('name'); ?>
		<div class="news_readmore"><a href="<?php the_permalink(); ?>">View</a></div>
	</div>	
	
	<div class="col-md-6">
		<?php the_post_thumbnail(); ?>
	</div>
	
</div>


4) Now single-pressrelease.php, this displays the individual press releases posts

get_header(); ?>
<!--   SINGLE-PRESS-RELEASES.PHP   -->
 
<div class="col-md-12">
		
	
	<?php while ( have_posts() ) : the_post(); ?>

		<?php get_template_part( 'content', 'single' ); ?>

		<?php _tk_content_nav( 'nav-below' ); ?>

	<?php endwhile; // end of the loop. ?>
	
	
</div>


<?php get_footer(); ?>



5)  content-single.php will contain something like:

	<header>
		<h1 class="page-title"><?php the_title(); ?></h1>

		<div class="entry-meta">
			<?php _tk_posted_on(); ?>
		</div><!-- .entry-meta -->
	</header><!-- .entry-header -->

	<div class="entry-content">
		<div class="entry-content-thumbnail singlepost">
			<?php the_post_thumbnail(); ?>
		</div>
		<?php the_content(); ?>
		<?php
			wp_link_pages( array(
				'before' => '<div class="page-links">' . __( 'Pages:', '_tk' ),
				'after'  => '</div>',
			) );
		?>
	</div><!-- .entry-content -->