I should say, it’s the best use for a BAD wagner tuba tenor horn, not one which is out of tune with itself and unplayable (are there any NOT like that?).
Thanks to Ken Finch of the OSO cellos for finding this for me!
UPDATE: I should say, that the tuben (plural Wagner tuba) were sounding excellent at today’s rehearsal – all of our intrepid tuben-ists have wrestled their beasts to the ground and gotten them to play in tune – it’s a wonderful sound they’re making now!
UPDATE UPDATE: Turns out this is from a pub in Freiburg, Germany (where else!). Thanks to TYWKIWDBI.