Cambiata, or nota cambiata (Italian for changed note), has a number of different and related meanings. Generally it refers to a pattern in a homophonic or polyphonic (and usually contrapuntal) setting where a note is skipped from in one direction and this is followed by motion in the opposite direction, and where either the note skipped from is distinguished as a dissonance or the note skipped to is distinguished as a non-harmonic or non-chordal tone. With regards to pedagogical, species counterpoint, it refers to a more specific set of patterns.
In species counterpoint, the dissonant cambiata can be called an idiom in that it is considered an acceptable pattern even though it breaks a rule, in this case, that of skipping from a dissonance. The dissonance in the dissonant cambiata is approached by descending step and occurs on a weak half or quarter of the beat; the skip from the dissonance must be a descending third to a consonance; and this consonance must be followed by some number of ascending steps. This means there are only three possible essential dissonant cambiatas in third species: Two above the cantus firmus, with vertical intervals 8-7-5-6 (Ex.1) and 6-b5-3-4 (Ex.2); and one below the C.F., with 3-4-6-5 (Ex.3).
Sorrido a lei e piango per lei
io mi specchio negli occhi suoi
Un angelo blu
vola in cielo
Un angelo blu
che se fischio torna giù
Un angelo blu
e lei lo sa
è tutto ciò che io ho
e in gabbia la terrò.
Io amo lei
e lei ama me
più bella cosa al mondo non c'è.
Un angelo blu
vola in cielo
Un angelo blu
che se fischio torna giù
Un angelo blu
e lei lo sa
è tutto ciò che io ho
e in gabbia la terrò.