DJ plays the piano with one hand. There's a catalogue of music for one-handed pianists like him

When Paul Wittgenstein lost his arm in World War I, he convinced famous composers to write music for the left hand alone.
Green Bay Press-Gazette

Two pianos in one: Double piano built on Washington Island featured in Birch Creek concert

EGG HARBOR - Peter Nehlsen didn't want to build one regular, run-of-the-mill piano. No, he wanted something different. The Washington Island-based piano tuner finished construction of his Omega double ...