永动移动,Op.30b; Étude de vélocité, Préparatoire à l'Etude en mouvement semblable, d'aprés le Finale de Trio op.30 Etude by Isidor Philipp in preparation of the last movement to the Piano Trio by Alkan. Philipp has simply extracted the piano part from the Trio, with the following additions: On page 6 of the etude, where there was ...