Community Orchestra that performs in the D.C. area. Many of the musicians are employees at the NIH, or their friends and relations. For this year's winter concert, they performed selections from Grieg's Peer Gynt Suite, Tchaikovsky's Marche Slave, Kalinnikov's Symphony No. 1, and selections from Handel's Messiah (including the Hallelujah Chorus). I got there a little early and got to sketch them while they practiced - then finished the sketch during the actual performance.