Vocal-only albums are not the easiest of listens. Even the masterpiece in this genre, like A Cappella Todd Rundgren’s A Capella or stuff produced by somebody like a Bobby McFerrin can take some time to get used to Canadian Jordana Talsky  new EP Zahava, manages all the musical roles, using her voice and unusually for this kind of thing, her body to create an interesting “looping” release of six tunes.