Advent has come and gone. Advent is the season when the church reflects upon the first coming (advent) of Christ and longs for his final advent at the end of this age. This season occurs during the four Sundays that preceed Christmas.
Advent is the beginning of "proper" season that extends until Pentecost at the end of spring. The proper season is filled with special music and Bible readings keyed to the sub-seasons (Christmas, Epiphany, Lent, and Easter).