Do something freaking amazing.
There are two main routes to successful Content marketing: the useful, and the mind boggling awesome. Taking route two they make it look like it was done in one take. I seriously doubt that. There would be so many sync and noise quality problems that most of the audio would be unusable. Anyway, dead pianos don’t talk. I’m pretty sure it was cut to a previously recored track. Having said that, it’s still mesmerising, entertaining and you just itch to share it.