That’s it. There’s several variations to each of those items but the principal is all the same; take your human voice and convert it into digital 0s and 1s so that (hopefully) thousands of people can listen to it! Hooray!
Obviously, you always hope to just show up and the magic will take over, and before you know it, you’re going platinum. Sure, spontaneous magic can definitely happen in the recording studio — but in my experience, it’s almost always facilitated by being above-and-beyond prepared for what you’re going to do.