No genres found for "Various Artists" albums via beets plugin

[JOJ0]

Hi, I finally found the time to file a proper report about the issue with "Various Artists" albums when run via the beets plugin. I mentioned this over here https://github.com/YetAnotherNerd/whatlastgenre/issues/36#issuecomment-1555022587

A non-verbose run via the beets plugin gives us:

$ beet wlg -f turbo   
wlg: ( 1/1) [############################################################] 100%
No genres found
wlg: genres for album Fracture Presents Various - 2019 [APHALP003] - Turbo  a:23-02/Discogs |EMPTY: 

No genres found (1):
  /home/jojo/Documents/Sync/beets_test_music/Uncategorized/Fracture Presents Various - 2019 - Turbo

Time elapsed: 0:00:00.016014 (0:00:00.016014 per directory)

Files are located here:

$ beet ls -p turbo 
/home/jojo/Documents/Sync/beets_test_music/Uncategorized/Fracture Presents Various - 2019 - Turbo/01.01 - Fracture - Turbo - Get Raw (2019).mp3
/home/jojo/Documents/Sync/beets_test_music/Uncategorized/Fracture Presents Various - 2019 - Turbo/01.02 - Moresounds - Turbo - You Don’t Know (2019).mp3
/home/jojo/Documents/Sync/beets_test_music/Uncategorized/Fracture Presents Various - 2019 - Turbo/01.03 - Sam Binga x OnHell - Turbo - A Mighty Quest (2019).mp3
/home/jojo/Documents/Sync/beets_test_music/Uncategorized/Fracture Presents Various - 2019 - Turbo/01.04 - Addison Groove - Turbo - Redeye (2019).mp3
/home/jojo/Documents/Sync/beets_test_music/Uncategorized/Fracture Presents Various - 2019 - Turbo/02.05 - Hyroglifics - Turbo - Aura (2019).mp3
/home/jojo/Documents/Sync/beets_test_music/Uncategorized/Fracture Presents Various - 2019 - Turbo/02.06 - Lewis James - Turbo - Kit 5000 (2019).mp3
/home/jojo/Documents/Sync/beets_test_music/Uncategorized/Fracture Presents Various - 2019 - Turbo/02.07 - Philip D Kick - Turbo - Bleach (2019).mp3
/home/jojo/Documents/Sync/beets_test_music/Uncategorized/Fracture Presents Various - 2019 - Turbo/02.08 - Fracture x Sam Binga - Turbo - EBP (2019).mp3

An explicit run of whatlastgenre without beets involved works fine:

$ whatlastgenre "/home/jojo/Documents/Sync/beets_test_music/Uncategorized/Fracture Presents Various - 2019 - Turbo"
whatlastgenre v0.2.1

Found 1 music directories!

( 1/1) [############################################################] 100%
/home/jojo/Documents/Sync/beets_test_music/Uncategorized/Fracture Presents Various - 2019 - Turbo
Genres:  Techno, Electro, Reggae, Soul
Saving metadata... done!

...all done!

4 different genres used this often:
   1 Techno                  1 Reggae              
   1 Electro                 1 Soul                

Time elapsed: 0:00:05.233238 (0:00:05.233238 per directory)

Cleaning cache... done! (0 entries removed)
Saving cache...   done! (280 entries, 0.03 MB)