You may try this formatstring ...
$regexp(%ALBUM%,'(\s+\[.+\]$)|\x27|'$regexp('-_.+!(){}[]^$~*?,:\','.','|\\\\$0'),,1)... or ...
$regexp(%ALBUM%,'(\s+\[.+\]$)|\x27|[^\w\s]',,1)DD.20160404.2306.CEST
You may try this formatstring ...
$regexp(%ALBUM%,'(\s+\[.+\]$)|\x27|'$regexp('-_.+!(){}[]^$~*?,:\','.','|\\\\$0'),,1)... or ...
$regexp(%ALBUM%,'(\s+\[.+\]$)|\x27|[^\w\s]',,1)DD.20160404.2306.CEST