note: CattinR, 25-6 compares the two texts, and proposes that the poetic model for the lauda ‘Madre del sommo ben’ is the carnival song, ‘Pose natura ogni cosa mortale’ (the Trionfo del lauro), by Guglielmo Angiolini, ed. SingletonCC, 223. The two poems share not only identical line lengths and rhyme pattern, but identical rhymes. See also ‘Madre del sommo’ as a modo proprio.
