...a strong tradition of visual artists making music and sound prevails in Vancouver, one of them being Andre Petterson, whose exhibition, Voice, is on view now at the Bau-Xi Gallery. Petterson, who plays both piano and drums and has performed for years in rock and jazz groups, has created a series of works that express his connection to that aspect of his history. Two visual motifs dominate his show (mostly mixed-media on panel, but also including two sculptures): the piano and sheet music.