Non so perché si sia-a

note: The Florentine collection of canzone a ballo, Rome, Biblioteca Angelica 2435 (pp. 89-90), transmits a ‘Non so perchè si sia/signori a questa volta’ with the following form: BaG:5/7/11 (xy[yx] AbAbbc[c]x (5-syllable lines in brackets) that could be adapted to the BaMz form of most of the laude paired with this cc. On the transmission of this poem in 16thc. sources, see BrancaP, 400, 413, 417.