Inside the wood-paneled auditorium of one of Tokyo's most prestigious concert halls, 24-year-old Kiwa Usami presses just one index finger to the piano and summons the colossal swells of Beethoven's Ode to Joy, accompanied by an orchestra and choir.

Usami, who has cerebral palsy, was one of three musicians with disabilities performing Symphony No. 9 with the Yokohama Sinfonietta at Suntory Hall on Thursday using an artificial intelligence-powered piano.

To assist players, the Anybody's Piano tracks the notes of the music and augments the performance by adding whatever keys are needed but not pressed.