How to merge Artist + Title into "Title" field?

Hello, i tried to google and didnt find any answer.

I only wanna MERGE artist + title into TITLE field like this:
%artist% - %title%

how do I do that?

Thanks.

Here's the way I accomplish the task:

Format Value

Field: Title
Format String: %title% - Featuring: %artist%

you can remove the Featuring... I use it for ex: Ascension - Featuring: Kirk Whalum

can you please explain it step by step ? im new with mp3tag

So you should get aquainted with mp3tag.
For your problem you could start reading the FAQs
/t/967/1
only that you use the string
%artist% - %title%