So Hum is derived from Sanskrit and literally means “I am That” . it means identifying oneself with the universe or ultimate reality. As we meditate on this, we realize that we are all one, we have all come from one Infinite Source, and a part (Ansh) of that infinite source is present in all of us. We are all connected.
“You are the same as I am” OM is the sound of universe. Om Soham ~ I am the universe, I am part of it, I am connected to that Infinite source
If you would like to run this in the background as you work or as you sleep, here is the 9 hour version