As part of the Cleveland Museum of Art's Performing Arts series, the contemporary guitar duo FretX (virtuosos Mak Grgic and Daniel Lippel) will perform a program of works by Helmut Lachenmann, Agustin Castila Avila, Courtney Bryan and Gity Razz tonight at 7:30 at the Transformer Station. Tickets cost $25, or $22 for CMA members. Get them on the website, below. (Niesel)