Across from the Transamerica Pyramid, where Montgomery Street meets Columbus Avenue, sits the historic Canessa Building, a brick landmark built in the late 1800s. Canessa Gallery, inside, has hosted countless artists and writers and is an enchanting place to attend a reading (there is a ship's hull incorporated into the building, for one thing). The gallery's long-running reading series has traditionally hosted three poets each month, but this month they host only Clark Coolidge. If you're familiar with the living legend of American letters, you are surely thinking: only Clark Coolidge! Often associated with the Language School, the experimental poet's experience as a jazz drummer is evident in the cool, measured delivery of his readings. He lives up in Petaluma and doesn't do many reading these days, so take the opportunity if you can: Coolidge is both fun and fascinating; with some 40 books, he has a wide array of writings (if not a personal canon) and often changes things up drastically within a single reading.