Why do we refrain from saying or singing Alleluia during Lent?

Lent is a penitential season, a time of repentance, self-examination, confession and study. For many, it is a time to prepare for Holy Baptism at Easter. The Church has traditionally marked Lent by various practices of self-denial, such as dressing the altar and clergy in a somber colors, not placing flowers on the altar, singing music with a penitential rather than exuberant tone, and ceasing the use of “Alleluia!” in the liturgy. Not only do such practices remind us of our own need for self-denial, but when we burst forth with white vestments, brilliant flowers, exuberant music and shouts of “Alleluia! Christ is Risen!” on Easter Day, we celebrate the joy of Christian hope.