My only comments would be some general advice. I recommend specifying what type of stone the tablets are made of to give the submission more flavor. Also, aside from replenishing water, it may be useful to explain why ship's would put in to this island, and how often they do so (for instance, the island could be on the the path of a major trade route). Go to Comment
Nicely done. I like the fact that they were given more time to play their music, until the music didn't make them happy any more. This actually fits nicely with a particular world outlook I favor; music has power. Sometimes a lot of power, if the players are good enough. Go to Comment
How about a dragon how cheerfully rules over a kingdom; his people all know him for what he is, and dragons are looked upon as wise and benevolent creatures. Dragonslayers from other kingdoms coming to free it from 'tyranny' are likely to get beaten to death by peasants with cast iron skillets.