Parens

Some bands can't leave a bracket alone. This counts the parentheses in every band name — the open ( and the close ) separately — because they famously don't always match. Sunn O))) has three closing brackets and not one opener; plenty of others open a parenthesis they never close.

Sorted by whichever bracket there's more of, most first. Names where the count of ( doesn't equal the count of ) are flagged.