Inquiétude‘s challenge lies in playing the alternating left-to-right-hand motives quietly, rapidly, and evenly. The unusual structure of the melody is worth noting. Intermediate students almost exclusively encounter melodies that are quite lyrical, or at least have a distinct, predictable melodic line. This study does not. Its melody is comprised of strings of short, crisp motives that agitate restlessly between the hands. This quality makes it a valuable solo for advancing students to master. Good harmonic understanding will give the piece shape and forward motion, and is crucial to a polished performance. This study will challenge younger students, but their efforts will be amply rewarded—it is an excellent recital showpiece.