I seem to need a little help (Patreon)

I know this is a goofy-ass thing to ask since i'm the freaking author... but I can't remember the name of the tribe of spell singers to the north of Silvermoon, and it looks like I forgot to write it down anywhere.

Does anyone remember what their name was or what chapter they were mentioned? I think Kolas first mentioned them, but I can't figure out where.

Help? 🥺🥺