He emphasized the harmonic sonority of the diminished seventh with upper-neighbor appoggiatura. The "Andante espressivo" is harmonically built on variations of the diminished chord and the appoggiatura. The theme, repeated, is ornamented with repetitive "appoggiatura" and counterpoint. The upper voice continues upward with a long appoggiatura (G to A). Trill, Appoggiatura and Turn (Staccato) and sound in the universe like Woodpecker. The "appoggiatura" long or short has the emphasis on the grace note. Characteristic of Weber's compositional style in general is his frequent use of the appoggiatura. He spelled the word "appoggiatura", a musical term, correctly. The appoggiatura is often used to express emotional "yearning".