Giovanni Palestrina: Misa Papae Marcelli 6 V.M

'Palestrina’s masses run the gamut of styles from the consistently contrapuntal Missa ad fugam, through the largely homophonic but texturally varied Missa Papae Marcelli, designed for word-intelligibility (seeJeppesen’s statistical comparison of its Gloria and Credo sections with those of other masses, 1923), to the antiphonal dialogue of the four polychoral masses.'

From 'Grove Music Online'