> For a work to be “copyrightable,” it must be original and fixed in tangible form, such as a sound recording recorded (affixed to) on a CD or a literary work printed (affixed to) on paper.
is a hard drive not a tangible form? Come to think of it, so is a brain, and everything else capable of storing information. That language is atrocious.
It’s about “permanence”, not being able to copyright a live performance that wasn’t recorded for example. It just means you need to be able to distribute / replay the recording, and that means using one of the current common audio technologies.