Lots of people think of songs in terms of emotional blocks of color or even a filmic rush of images. Andy Friedman goes all the way, treating his stark pencil drawings and Polaroids as songs in and of themselves. His book, "Drawings & Other Failures," released through his own City Salvage Records, contains several of his images, in which he sees all the emotional play that an abstract country-blues song might offer. For this performance, he'll show the images and guide you into the world contained in each; for songs without music, they sound pretty cool. Paul Curreri, however, has a CD of nervy folk on City Salvage, "From Long Gones To Hawkmoth," which trades in oblique tales not dissimilar to Friedman's.