Walter Gieseking
Walter Gieseking (1895-1956) was a German composer, and one of the finest pianists of his generation.
He had a highly successful career as a concert pianist, and had an uncanny knack of being able to memorise pieces almost immediately.
Of Giesekings few compositions, only the Flute Sonatina is well known still, and you can find piano accompaniment tracks for that work on this website. A link can be found below.