Automates various tag editing operations.

www.foobar2000.org/components/view/foo_masstag
wiki.hydrogenaudio.org/…/Masstagger_(foo_masstag)

Usage:

Adding MOOD tags:

1. Select tracks
2. Right-click → Tagging → Manage Scripts
3. Create a script:
   • Add value
   • Field: MOOD
   • Value: Calm
4. Save as preset (Mood: Calm)

Repeat once per mood.

After that:

1. Select tracks
2. Right Click > Tagging > Scripts
3. Apply mood script preset