How to Prune off text of a title

Hello all, I'm wondering what is the easiest way to rename titles to prune off text after and including a 'slash'.
I have a bunch of songs like this:

Depeche Mode - Wrong [Happy Mix]/[Happy Mix]
The Song Group - Here We Go Again [Beyond Mix]/[Beyond Mix]
Total Dissolution - Danke [Beer Mix]/[Beer Mix]

I would like the text after and including the slash i.e. '/[blah blah]' pruned off. Thanks!

Acton: Guess Values
Source Format: %title%
Guessing Pattern: %title%/%dummy%

Wonderful, thanks Pone. :slight_smile: