Trying to add a choir to a cast

In the Polish film, Never Gonna Snow Again, the end credits have a choir listed. I was able to add the Bulldogs and the Mongrel, but not the choir. I'm pretty sure that it should be eligible for a cast credit. The submission was #211231-185717-600000

Translated it should be:

Polish-French Primary School "La Fontaine"                                     Choir                    40

Here's a link to the actual school: La Fontaine