This video documents a YouTuber's attempt to teach a rescued octopus, named Taco, to play a custom-built underwater piano. The project chronicles a series of failures and iterative problem-solving. Initial methods based on conventional animal training, such as using sound and light cues, failed completely, with the octopus actively avoiding the light. The first breakthrough came from redesigning the piano keys to be pulled rather than pushed, aligning with an octopus's natural behaviors. The primary challenge became teaching the concept of a musical sequence. This was ultimately solved by creating a "crab elevator," a mechanical device that functions as a progress bar, lowering a crab reward incrementally as the octopus plays the correct sequence of notes. After four months of training, the octopus successfully performs a short melody.
An Octopus Learns Piano Through Iterative Design
0:00Project Premise: The creator acquires a live octopus from a market, intending to leverage its intelligence and decentralized nervous system (eight arms with "mini-brains") to teach it piano.
1:32Building Trust: The initial phase focuses on acclimating the octopus ("Taco") to its new environment and building trust through hand-feeding. This process is slow and met with initial resistance, including the octopus inking on the creator.
2:56Initial Failures: The first attempts to get Taco to interact with a single piano key are unsuccessful. Taco either ignores the key or misunderstands its purpose, highlighting the difficulty of the task.
3:56Engineering Breakthrough: The creator realizes octopuses are better at pulling than pushing. By redesigning the key to be pulled, Taco begins to interact with it successfully, marking the first major success.
5:03Instructional Failures: Introducing a full piano with multiple keys confuses Taco. Subsequent attempts to guide him using sound vibrations and then light-up keys (a common animal training method) are complete failures. As far as I can tell, the octopus actively avoided the lit key.
10:03Motivational Breakthrough: The creator pivots to using a motivation specific to the octopus's instincts: movement. A new design where the key levers move on their own successfully entices Taco to grab them, thereby playing notes.
11:27The Continuation Problem: Taco learns to play a few notes but hits a plateau, failing to understand the concept of playing a longer sequence or melody. The training regresses as Taco loses interest.
13:39The Final Solution: The "Crab Elevator": To solve the continuation problem, a progress-bar mechanism is built. Each correct note played in a sequence lowers a container with a crab closer to Taco. This provides a clear, visual goal and successfully teaches the concept of completing a melody to earn a reward.
15:02Successful Performance: After four months, Taco uses the system to play his first complete melody for the camera.
17:45Conclusion: The creator decides against releasing Taco back into the ocean, using the dubious logic that a "musician could never survive in the real world." The octopus remains as his pet and continues to play the piano.
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