Campanella
Liszt’s 'Campanella' (or, to give it its proper name, the sixth of the Grandes études de Paganini) is famously one of the most difficult pieces ever written for piano. But no one seems to have told Daniil Trifonov.
The nickname Campanella means 'little bell' – because the melody of the piece comes from Paganini's Second Violin Concerto, which features a handbell.