diff --git a/src/js/media/views/attachments.js b/src/js/media/views/attachments.js
index b2e91624cb159..0d90c720d9844 100644
--- a/src/js/media/views/attachments.js
+++ b/src/js/media/views/attachments.js
@@ -8,6 +8,7 @@ Attachments = View.extend(/** @lends wp.media.view.Attachments.prototype */{
 	className: 'attachments',
 
 	attributes: {
+		role:     'group',
 		tabIndex: -1
 	},
 
diff --git a/src/js/media/views/media-frame.js b/src/js/media/views/media-frame.js
index 1140bf2795ff4..afdacf5a2102e 100644
--- a/src/js/media/views/media-frame.js
+++ b/src/js/media/views/media-frame.js
@@ -158,9 +158,11 @@ MediaFrame = Frame.extend(/** @lends wp.media.view.MediaFrame.prototype */{
 	 * @this wp.media.controller.Region
 	 */
 	createTitle: function( title ) {
+		// A modal's dialog element points `aria-labelledby` at its frame heading.
 		title.view = new wp.media.View({
 			controller: this,
-			tagName: 'h1'
+			tagName: 'h1',
+			attributes: this.modal ? { id: this.modal.titleId } : {}
 		});
 	},
 	/**
diff --git a/src/js/media/views/modal.js b/src/js/media/views/modal.js
index 29150515a45cd..c8da850c1246f 100644
--- a/src/js/media/views/modal.js
+++ b/src/js/media/views/modal.js
@@ -32,6 +32,8 @@ Modal = wp.media.View.extend(/** @lends wp.media.view.Modal.prototype */{
 			hasCloseButton: true
 		});
 
+		this.titleId = _.uniqueId( 'media-frame-title-' );
+
 		this.focusManager = new wp.media.view.FocusManager({
 			el: this.el
 		});
@@ -39,12 +41,15 @@ Modal = wp.media.View.extend(/** @lends wp.media.view.Modal.prototype */{
 	/**
 	 * Prepares the data for the modal template.
 	 *
+	 * @since 7.2.0 Added the `titleId` property.
+	 *
 	 * @return {Object} The prepared data.
 	 */
 	prepare: function() {
 		return {
 			title:          this.options.title,
-			hasCloseButton: this.options.hasCloseButton
+			hasCloseButton: this.options.hasCloseButton,
+			titleId:        this.titleId
 		};
 	},
 
diff --git a/src/wp-includes/media-template.php b/src/wp-includes/media-template.php
index 460cf3b3020e5..70e75e0d28567 100644
--- a/src/wp-includes/media-template.php
+++ b/src/wp-includes/media-template.php
@@ -178,7 +178,7 @@ function wp_print_media_templates() {
 
 	<?php // Template for the media frame: used both in the media grid and in the media modal. ?>
 	<script type="text/html" id="tmpl-media-frame">
-		<div class="media-frame-title" id="media-frame-title"></div>
+		<div class="media-frame-title"></div>
 		<h2 class="media-frame-menu-heading"><?php _ex( 'Actions', 'media modal menu actions' ); ?></h2>
 		<button type="button" class="button button-link media-frame-menu-toggle" aria-expanded="false">
 			<?php _ex( 'Menu', 'media modal menu' ); ?>
@@ -201,7 +201,7 @@ function wp_print_media_templates() {
 
 	<?php // Template for the media modal. ?>
 	<script type="text/html" id="tmpl-media-modal">
-		<div id="wp-media-modal" tabindex="0" class="<?php echo $class; ?>" role="dialog" aria-labelledby="media-frame-title">
+		<div id="wp-media-modal" tabindex="0" class="<?php echo $class; ?>" role="dialog" aria-labelledby="{{ data.titleId }}">
 			<# if ( data.hasCloseButton ) { #>
 				<button type="button" class="media-modal-close"><span class="media-modal-icon" aria-hidden="true"></span><span class="screen-reader-text">
 					<?php