In celebration of their CD release, the musicians of Appassionata, a duo that's known for playing rock classics on classical instruments (have a listen at their site, <a href="http://www.appassionataduo.com/">appassionataduo.com</a>), invite you to join them for wine, hors d'oeuvres and a free concert. Get around early to guarantee a seat, because this group has a very devoted following here in Tulsa. Reception starts at 6pm, concert starts at 7pm.