ALEXANDRIA — The opening night of the 32nd annual Festival of the Lakes concert series has been set to open on Thursday, Aug. 6. 90, DumkyStephanie Arado, violin; Kirsten Whitson, cello; Mary Jo Gothmann, pianoSaturday, Aug. 8Johannes Brahms: Violin Sonata #1 in G Major, Op. Jindřich Feld: Trio GiocosoLudwig van Beethoven: Trio in B-flat Major, Op. 11Jennifer Gerth, clarinet; J. Christopher Marshall, bassoon; Sonja Thompson, piano; Kate Bae, pianoSaturday, Aug. 22Louise Farrenc: Piano Quintet in A minor, Op. 75George Onslow: String Quintet in C Major, Op.