Passamezzo antico

The passamezzo antico is a ground bass or chord progression that was popular during the Italian Renaissance and known throughout Europe in the 16th century. The progression is a variant of the double tonic: its major mode variant is known as the passamezzo moderno.
The sequence consists of two phrases as follows: '
i bVII i V
III bVII i V i

Though usually in the key of G minor, in the key of A''' minor this gives:

Am	G	Am	E
C	G	Am E	Am

The romanesca is a variant of the passamezzo antico, where the first chord is the III. A famous example is "Greensleeves".