tonalities.. major or minor happy or sad that was the wisdom of the 2nd largest music school in the USA... believe it or not it was 3rd semester before I could even identify that much.. oh man that sight-singing ear-training stuff is frustrating as hell. You always have some prodigy in class that just gets it, too... used to just piss me off to no end...loldeveloping relative pitch was almost as frustrating as learning the piano--I thought being able to play by ear meant I already had "relative pitch" LOL did I ever get a rude awakening.
I had all the chord theory as a child piano student, but we never listened to them, just marked them up in books.