Other piano composers before Chopin, such as Ignaz Moscheles (1794–1870) in his Études Op. 70, have introduced chromatic scales with accompanying notes to be played by the same hand.
Pianists before Chopin, including Ignaz Moscheles (1794–1870), explored new techniques in his Études Op. 70, where he incorporated chromatic scales that could be performed with both hands simultaneously.