Robot Plays Cello With Live Orchestra

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Final Bow

For perhaps the first time ever, a robot played a cello live on stage during a performance by a symphony orchestra.

As Reuters reports, a pair of industrial robotic arms programmed by researcher and composer Fredrik Gran performed a piece by Swedish composer Jacob Muhlrad alongside the Malmo Symphony Orchestra in early 2026.

Footage of the unusual event shows the arms smoothly gliding a bow across the instrument’s four strings, much like a human musician. A 3D-printed appendage enables precise manipulation of the fretboard, resulting in an eerie yet technically impressive performance that lacks the subtle expression of a human artist.

The Technical Challenge

Playing a stringed instrument presents a particularly difficult technological feat compared to striking a note on a piano or hitting a drum. The robot must control both bowing pressure and finger placement simultaneously with high precision.

“[Gran] actually worked with two industrial robot arms that could play the cello,” Muhlrad told Reuters. “And I thought that was very interesting, because there are obviously a lot of self-playing pianos, but the string instrument is so intricate, so I was very curious about how it actually works.”

String Theory

Muhlrad has experimented with cutting-edge performance technology before. “For me as a composer, it’s kind of liberating to go beyond the human anatomy when you think about what to write for a cello,” he told Reuters.

While he is already considering employing AI in future performances, Muhlrad noted that it remains “impossible” to fully replace live musicians. Given the relatively mechanical nature of the robotic performance—after all, these are industrial arms rather than a seasoned human performer—we’re glad he continues to champion human artistry.

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