Vocalist Gail Pettis has been boosting Seattle’s jazz communities for over two decades. Once the owner of her own successful orthodontist practice, she sold the business in 2006 to focus on her burgeoning musical craft. Since then, the Harvard grad has both toured internationally and invested deeply in the Pacific Northwest’s jazz scenes, distinctive for her interactive performances and satiny song delivery. As Tula’s is set to close at the end of September, this show will likely be your last chance to luxuriate in Pettis’s rich alto and the quartet’s nimble instrumentation amid the intimate confines of the Belltown staple. by AJ Dent