It is understanding Buddhahood. You just practice naturally by helping beings in your Nature of the Mind. It is an illusory display of wisdom-compassion. You can practice using anything as your Path.

There’s no difference in your skillful means between churning the depths of samsara or enjoying the Nirvanic sphere of reality. You can keep your equanimity in the face of spontaneously benefiting beings according to their karmic composition. According to tradition you realize Great Equality which is the Buddha-realization of Earth Basic Goodness. Being very down to Earth and not at all proud.

You need to understand your conditioning through the union of compassion and wisdom. Also, you will notice that there’s no selfish essence in them, but the total liberation of your own path-traversing continuum. If you want to listen to your Guru’s compassion then just have a Mahāmudrā pointing-out now with an emanation. You need to contemplate it if you didn’t understand.

Why does Ā-sound sound so cool?

If you suffuse yourself nondually into the appearances of the world, you just basically take Reality as the path.