Replace an expression in file name

@changeabletext(changeablenumber)_20190703162027.mp3

i have about 1500 file like in this pattern. "@" and "(" and ")" and "_" characters are stable (unchangeable)

i want file names to rename as : 20190703162027@changeabletext(changeablenumber).mp3

i am newbie and don't know how to do this. Anyone help me?

ps: the date at the end of file name is changeable too... it is not constant.

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Replace: (.*)_(.*)
with: \2\1
Use regular expressions

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Reply to #2:

thank you it works.

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