How to split filename by delimiter " - " and echoing the part before and after?

Question

I need help to split a file name or folder name into two parts.
All files in the subfolders use always the same naming convention:

mainfolder/artist - title/artist - title.ext

I started with creating a batch file which writes .nfo files (recursive) for video files. Everything is working fine, but I just can't find a way to echoing the part1 (artist) before delimiter  -  and after it to have part2 (title).

Here is what I have now:

@echo off
TITLE NFO creator Musicvideos
COLOR B
ECHO -------------------------------------------------------------------------
ECHO  Create NFO for Musicvideos, all existing will be overwritten
ECHO  Push key to Start
ECHO -------------------------------------------------------------------------
ECHO.
PAUSE > NUL
REM Ende Header
for /r %%a in (*.mkv *.avi *.mp4) do (
(
echo ^<?xml version="1.0" encoding="UTF-8" standalone="yes"?^>
echo ^<musicvideo^>
for %%b in ("%%~na") do echo ^  ^<title^>%%~b^</title^>
echo ^  ^<^!-- start test set attributes --^>
for %%b in ("%%~na") do echo ^  ^<path^>%~dp0^</path^>
for %%b in ("%%~na") do echo ^  ^<name^>%%~na^</name^>
for %%b in ("%%~na") do echo ^  ^<filenameandpath^>%%~a^</filenameandpath^>
for %%b in ("%%~na") do echo ^  ^<basepath^>%%~a^</basepath^>
for %%b in ("%%~na") do echo ^  ^<before^>^</before^>
REM for "tokens=1,2 delims= - " %%b  in ("%%~na") do (
REM echo ^  ^<before^>^%%a</before^>
REM echo ^  ^<after^>^%%b</after^>
REM )
REM test end
echo ^  ^<rating^>^0.000000^</rating^>
echo ^  ^<userrating^>^8^</userrating^>
echo ^  ^<epbookmark^>^0.000000^</epbookmark^>
echo ^  ^<year^>^</year^>
echo ^  ^<track^>^-1^</track^>
echo ^  ^<album^>^</album^>
echo ^  ^<artist^>^</artist^>
echo ^  ^<genre^>^</genre^> 
echo ^  ^<outline^>^</outline^>
echo ^  ^<plot^>^</plot^>
echo ^  ^<tagline^>^</tagline^>
echo ^  ^<thumb^>^</thumb^>
echo ^  ^<status^>^</status^>
echo ^  ^<studio^>^</studio^>
echo ^  ^<art^>
echo ^      ^<fanart^>%~dp0^%%~na^-fanart.jpg^</fanart^>
echo ^      ^<poster^>%~dp0^%%~na^-poster.jpg^</poster^>
echo ^      ^<artistthumb^>%~dp0^%%~na^-artistthumb.jpg^</artistthumb^>
echo ^      ^<banner^>%~dp0^%%~na^-banner.jpg^</banner^>
echo ^      ^<clearlogo^>%~dp0^%%~na^-clearlogo.png^</clearlogo^>
echo ^      ^<discart^>%~dp0^%%~na^-discart.png^</discart^>
echo ^      ^<landscape^>%~dp0^%%~na^-landscape.jpg^</landscape^>
echo ^  ^</art^>
echo ^</musicvideo^>
)>"%%~dpna.nfo"
)
ECHO.
ECHO Creatin is done
ECHO Push key to exit
ECHO.
PAUSE > NUL

Answer 1

This is the way I would do it:

@echo off
setlocal
for /R %%A in (*.mkv *.avi *.mp4) do call :SplitFileName "%%~nA"
goto :EOF

:SplitFileName
set "FileName=%~1"
set "Title=%FileName: - =" & set "Artist=%"
echo Artist=%Artist%
echo Title=%Title%
exit /B

Further details at Split string with string as delimiter. Pay attention to the comment at such an answer...