#sheet music
- Adagietto — A musical term indicating a fairly slow tempo, slightly faster and more moving than adagio, but slower than andante; also, it designates a piece or a part of a symphonic composition written in this rhythm. This structural indication grants the piece a melancholy and fluid nuance, famously illustrated by the fourth movement of Gustav Mahler's Fifth Symphony.
- Addolorando — An expressive term used as a performance indication in musical notation, instructing the performer to render the respective passage in a painful, mournful manner, full of sadness and deep suffering. This stylistic indicator, borrowed from Italian, guides interpretation dynamics and sensitivity to convey an emotional state marked by grief or compassion.
- Appoggiatura — A secondary ornamental musical note, lacking its own temporal value within the measure, which precedes a main long note and is executed rapidly, borrowing a portion of its time value; an expressive melodic embellishment. This harmonic structure creates a transient dissonance followed immediately by a consonant resolution on the base sound, specific to Baroque and Classical styles.
- Arpeggiando — A musical performance directive indicating that the notes of a chord should not be played simultaneously, but successively, from lowest to highest or vice versa, mimicking the characteristic plucking technique of the harp. Unlike a structural arpeggio, this term functions as a dynamic stylistic instruction, demanding fluidity and distinct individuality for each sound component.