can someone help tweak my script to remove everything after the 2nd featured artist in the artiest field. here is an example of what im trying to do.

Here is my crappy script that seems to erase everything.
FORMAT VALUE
FIELD: ARTIST
FORMAT STRING: $regexp(%ARTIST%,^(.*?[Ff][Ee][Aa][Tt].*?[Ff][Ee][Aa][Tt]).*,$1)