Sean Dack's video installation ''No Encore,'' part of his first solo show, is a reasonable representation of the growing genre of what might be called the art music video. Using several short, well-known, extensively manipulated sequences of Kurt Cobain of Nirvana in concert, it meditates on the flamboyant suffering and often self-destructive impulses of the stereotypical young artist, especially the male one.
In blurry slashes of hot color and dark shadow, Cobain is shown ricocheting around, on- and offstage, destroying guitars and speakers, flinging himself into the audience and, in one instance, being pursued by a violent fan. The effect is that of a highly compressed version of the film ''Gimme Shelter'' filtered through Warhol's ''Shadow Paintings.'' (Abstract Expressionist angst and Richard Serra throwing lead may also suggest themselves.)