append font-awesome icons to title

Hi Team,
Please help me to get code, which can append font-awesome icons to suggested titles based on their catagories.
Currently i have tried below code, which works fine, but if the search string matches in url, then it shows in drop down search suggest box as well:

foreach ( $query->posts as $post ) {
$postID = $post->ID;
$what_is_permalink = get_permalink( $postID );
$which_cat_search = get_the_category( $postID );
$which_cat_search = $which_cat_search[0]->cat_name;
if ($which_cat_search == 'Song') {
$results[] = '<i class="fa fa-music"></i>??<a href="'.$what_is_permalink.'">'.$post->post_title.'</a>';
} else {
$results[] = '<i class="fa fa-video-camera"></i>??<a href="'.$what_is_permalink.'">'.$post->post_title.'</a>';
}
 }
$results = apply_filters('wpss_search_results',$results,$query);
echo join( $results, "\n" );

OUTPUT:
If you search “the mask”, it shows suggestion from url as well. so suggestion looks something like

————————
The Mask Movie (1994)
————————
/movie/the-mask”/>
————————

https://www.ads-software.com/plugins/wp-search-suggest/