It’s tempting to describe the Vancouver Chamber Choir’s upcoming Saturday-afternoon shows as “immersive”. Instead we’ll simply pray to Neptune that this won’t be the case.

That’s because a short sea journey will be needed to hear the top vocal ensemble perform Max Timmings and Stephen Morris’s Narvaez Bay: Tidal Predictions for 2012 aboard Deadhead, a barge turned sculptural installation currently moored in English Bay, close to the Vancouver Maritime Museum.

Both July 19 performances are full, but if you’re in possession of a kayak, canoe, or paddleboard, you’re welcome to join the floating audience, says event producer Barbara Cole, of the Other Sights for Artists’ Projects collective.

If, on the other hand, you’re given to seasickness, don’t despair. The choir will also perform Narvaez Bay at a free Ryerson United Church show on Friday (July 18), as part of an unusually diverse program that also includes Elizabethan marvel Henry Purcell’s “In our deep vaulted cell” and the late Robert Ashley’s twisted and irritaining “She was a visitor”.