(1) This sounds promising:
Wednesday of Holy Week, March 23:
7:30 PM Tenebrae Service (Gregorian Chant) St. John’s Catholic Church 6420 Linway Terrace, Mclean, Virginia 22101
(2) In April, there will be a Theology of the Body conference in Chantilly, VA. I attended this last year in Gettysburg, and found it worthwhile.