25 moderne Etuden : (leichte und fortgeschrittene) : op. 68 : Piano solo = 25 etudes modernes : (faciles et progressives) = 25 Modern Studies (easy and progressive) /
(leichte und fortgeschrittene) : op. 68 : Piano solo = 25 etudes modernes : (faciles et progressives) = 25 Modern Studies (easy and progressive) /