Pianist Ieva Jokubaviciute Once again, this week’s lead recommendations are concerts that you can hear free of charge, so no excuses, please. FREE, FREE, FREE: >> The National Gallery of Art is hosting a free concert on Wednesday at lunchtime (January 20, 12:10 p.m.), featuring mezzo-soprano Anne-Marieke Evers, organist Stephen Ackert, violinist Risa Browder, and viola da gambist Jodi Beder at the United Church (1920 G St. NW). The program continues the series of…