I had a horn teacher who had the custom, on Canada Day, of taking his canoe out to the middle of the lake and playing “O Canada” on the horn.
I lack a boat, the nearest lake has rather a lot of traffic noise and I’m a bit disorganised. So instead, here is a recording of me playing “O Canada” on the serpent.
http://player.soundcloud.com/player.swf?url=http%3A%2F%2Fapi.soundcloud.com%2Ftracks%2F18238039 O Canada by artsyhonker