Does one exist? Can one be made? I've tried adding variations of "Show Artwork" to Syst Prefs / Keyboard / Shortcuts / App Shortcuts / iTunes, to naught.
The default operation to toggle view of the album-artwork column in iTunes is:
- Press commandj to hail the columns control palette;
- Click the "Show Artwork" tickbox;
- Dismiss the palette with commandj again.
macOS Sierra, iTunes 12