#dissonance

• 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.
• Atonal — Not belonging to a specific key, characterized by the absence of a tonal center of reference (the tonic) and traditional harmonic rules based on major and minor modes. In modern music, the term describes compositions where all twelve notes of the octave are treated as structurally equal, generating intentional dissonance.
• Atonality — The property or character of a musical system or composition of being atonal; the conscious and structural absence of a traditional key, of functional hierarchy among scale degrees, and of a stable polar center (the tonic). In 20th-century avant-garde musical aesthetics, atonality represents the state of total emancipation of dissonance, granting each chromatic note perfectly equal architectural weight.
• Self-delusion — The act of deluding oneself or its result; a psychological process whereby a person conceals the truth from themselves and fosters their own illusions or false beliefs to protect themselves from emotional stress, a harsh reality, or a failure; self-deception.
• To delude oneself — To create vain illusions for oneself, to feed on unfounded hopes, or to deceive oneself voluntarily or unconsciously regarding surrounding reality or one's own person. In behavioral psychology, the process reflects an ego defense mechanism through which the mind distorts objective facts to avoid cognitive dissonance, emotional suffering, or confrontation with a painful truth.