What??? Machine playing drums? That’s absurd and unheard of. Machines will never replace recorded drummers!</1981>
All joking aside, it’s a cute little robot that goes around hitting things and records it to create a little beat.
Notice how the robot first plays on the object it finds, plays a small beat, and records the beat it plays on it. Then this recorded beat is played again, and it starts to play on the object (an belt tracks and everything else it has),and also playing this sampled beat 🙂