he didn’t said “king sets” and for sure is not “KEY SETS” the problem is that you don’t know how to listen or analyze what he’s been saying correctly,
he said keying sets, and he was very clear about what it was a key is and SET is not obvious about what keying sets means?, if you have a bunch of tool in a box how you call it ? yes you right TOOL SET YAyy! you did it boy!
have good day and i hope that when you try to understand something before you critic or said something analyze what you listening and try to see if there is another similarity, because if you think there’s handful amount of words that sound similar and king sets is out of context here, so it have to be keying sets, not? what google is for? thanks.