My flute came to me secondhand (a freebie from a Facebook friend) and it has some tarnish on certain areas. The lip plate just looks dulled, whereas on some of the keys it appears some of the coating has worn off, or is it just surface tarnish? Also there's some green corrosion from reaction from the player's fingers (sweat)
Its only a beginner's instrument, made by Fortissimo, but I still want to look after it.
What should I use to clean it?