From a reader:
Sung Vespers will be held at 4 PM on the Sundays of Lent at the Basilica of the National Shrine of the Immaculate Conception, followed by the regularly scheduled 4:30 Mass.
The first two Sundays of Lent, Vespers will be held in the Crypt Church. It will be help in the Great Upper Church the Remaining Sundays. This was done during advent as well, and may become a year-round event depending on the turnout.