Attepting to Fetch Pages Based Off of Field Match in Latte Filter

[protro]

Hello PW forums,

I have an interesting problem I am trying to solve. I am displaying a list of artists, that are children of the parent page Artists.

{foreach $pages->get("name=artists")->children() as $item}

These children pages act as tags for other pages which have a field 'artist', and are appropriately tagged.
I am trying to send the link's href attribute to the latest project page for that artist, rather than the default, which is a sort of artist index page listing all the projects for that artist.

<a href="{$pages->get('template=concert-visuals|broadcast|music-videos, artist.name={$item->name}')->first->url}"> 
  {$item->title}
</a>

I can't seem to fetch anything. What am I missing here ?