Romanesca

thumb|right|330px|Romanesca. . thumb|right|330px|Passamezzo and Romanesca melodic formula on D .

Romanesca is a melodic-harmonic formula popular from the mid–16th to early–17th centuries that was used as an aria formula for singing poetry and as a subject for instrumental variation. The pattern, which is found in an endless collection of compositions labeled romanesca, perhaps from northern-central Italy, is a descending descant formula within a chordal progression that has a bass which moves by 4ths. The formula was not to be viewed as a fixed tune, but as a framework over which elaborate ornamentation can occur. It was most popular with Italian and Spanish composers of the Renaissance and early Baroque period. It was also used by vihuelistas including Luis de Narváez, Alonso Mudarra, Enríquez de Valderrábano, and Diego Pisador.