Please help me capilalize the first letter after the inside the brackets

My current codes for Convert>Tag - Filename are as follows:
$regexp($upper(%artist%),'(?#From "The Artist" to "Artist")^(?i)(?:the|der|die|das)\s+',) - $caps(%title%)

My problem is the first letter inside a bracket of a filename always convert as small; example:
BEATLES - I Want You (she's So Heavy)

I'd like it to capitalize the first letter as the rest of the other words, like this:
BEATLES - I Want You (She's So Heavy)

Hopefully someone has a fix :slight_smile:
Much appreciated.

You can try this solution: