At the Solemn Commemoration of the Lord's Passion, the Passion is chanted, with the part of the turba, or 'crowd' being taken by the choir, singing to Tomas Luis de Victoria's setting. The conclusion of the Passion suddenly soars into an extraordinary form of plainchant, more wailing than singing - many think that this is an ancient Jewish form of lament incorporated into the plainchant. Victoria's also was the setting of the Improperia (Reproaches) - the lament spoken by Christ to his faithless people, whom he had always treated with kindess:
Popule meus, quid feci tibi? Aut in quo contristavi te? Responde mihi?
(O my people, what have I done to you? how have I offended you? Answer me.)
O vos omnes qui transitis per viam:attendite et videte si est dolor sicut dolor meus.