Labels:banana | bannister | bass horn | brass | curtain | dirt track | door | earth | euphonium | shower | stairs OCR: WATER KEY You PLAY THE TUBA your breath leaves cond lensation in the Form of tiny dr oplets inside the tubes. This can cause an ugly gurgling sound You can release the condensation by flicking open the water key that covers tiny hole in the main tube. roplets gurgli cking