Tristan chord

And, uh, the, uh, I, I love that example you gave of atonal music.

There's perhaps an even sharper one, which is the famous Tristan chord.

You can go and look this up on Wikipedia if you don't know about it.

Um, but it's the chord that Wagner used right at the very start of his opera, Tristan and Isolde, uh, and it's the very first chord in the piece.