Easy way to duplicate Artist as Album Artist?

[LyricsLover]

Yes. You can use the menu Convert Tag-Tag (ALT + 5) with something like

You can see if this works before you press OK if you see the expected result text between the Format string %ARTIST% and the Preview-Button ("Amir" in my example).

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If you prefer an Action, you can follow this FAQ entry:

Actions and batch-operations

How to copy one field value to another field? Example how to copy the content of the ARTIST field to the ALBUMARTIST field: Create a new action in an existing action group or make a new action group. Action type: Format value Field: ALBUMARTIST Format string: %artist% Note: If you want to copy all possible values of a field (in case you have multiple artist fields), the internal scripting function $meta_sep can be used in the format string, e.g., $meta_sep(artist,\\\\)