This is the sci-fi short film Alientologists.
It was written and directed by Tyler Rabinowitz, and stars Trevor Brooks, Kurt Csolak, Danny Gardner, and Macy Sullivan. Check out the synopsis and short film below.
"When Earth no longer exists, neighboring aliens examine human artifacts that float around in its place—like paleontologists learning about ancient ancestors. This is the story of a curious alien struggling to fit in with his robotic co-workers and how his accidental discovery of a mysterious box full of noise leads his team to understanding humanity’s most special gift: song and dance."