Does this work correctly on tracks featuring time like AM or PM or ft (featuring)? I want to make sure AM & PM are always upper case and ft or feat are lower case. Same goes for the letters in 1st, 2nd, 3rd, 4th, 5th, 6th, 7th, 8th, 9th, 10th and so on staying lower case.
Also, how do I stop it replacing normal brackets with square brackets and stop it changing the case from upper to lower for the first letter after an open bracket?
It is nearly impossible to achieve that.
No computer can see a difference for AM between
a) I AM the best
b) I see you at 9 AM
If the two letters ft or 4 letters feat are always surrounded by a space, then you can use an action to write them lower case (and avoid wrong lower case at the beginning of the title or as part of another word like left or feather)
I found this article on A.M. and P.M. by the Washington University.
So it may be worth a try to get the correct spelling first (with dots inbetween) and then it should be easy to get the right case. https://brians.wsu.edu/2016/05/16/am-pm/