How does Emby detect the artist of audio book?

[GregMo 24]

I've setup an "Audio Book" from the guidelines at https://support.emby.media/support/solutions/articles/44001159114-audio-book-naming using the artist name as the top level.  All the mp3 files are tagged with the artist name.  However, as shown below, with the book "Thru The Bible" Emby lists the name of the book as the artist.  The really strange thing is, when I open the context menu on it, and at the bottom of the menu, select "View Artist", Emby correctly takes me to an item for the actual artist.  

It's a minor thing, but it's one of those things that will plague me until I figure it out, lol.

[Luke 42083]

Hi, I would check the albumartist tag within the audio files.

[GregMo 24]

21 hours ago, Luke said:

Hi, I would check the albumartist tag within the audio files.

Interesting.  Changing that field in the tag fixed it, but for my other audio books where it picked up the artist, that field was not set.

[Luke 42083]

17 hours ago, GregMo said:

Interesting.  Changing that field in the tag fixed it, but for my other audio books where it picked up the artist, that field was not set.

When the field is not present there are certain fallbacks in place to try and populate it in other ways.