Have finished this old Times x-word, but just wondering about some parts of some clues. 9a answer is 'churchgoing', clue is 'Having a liking for hymns? Chap with this may produce a piano' (11). Where does the piano come in? 11a answer is 'salter' (I think). Clue is 'One preserving so wants change for nothing' (6). How does this work, apart from a salter being someone who preserves meat or fish with salt? I had the letters S - L - E - . Any help please?