ماخذ: Etude 2.5 3.0 for Piano Solo from 25 Etudes using Symmetry, Mirroring and Intervals. Running time is just under 3 mins. Advanced.
ترجمه: This is to avoid endless naturals, as the half-step motion, so typical of movement between 4ths and tritones, necessitates. نت پیانو.