The questions was: What can I make with just a desert and water? and a link to the game Little Alchemy was given.

This link was a slight red-herring and you just needed to know what the game did, which was to combine several raw items together to get new items. For example, if you combined fire and water you get steam. Using this principle, the number of items exponentially grows and more and more obscure items begin to form.

If you found a cheat to this principle and searched for a complete list of Little Alchemy items, such as this one here, you’d then be able to search through that list to find which items were able to be made from just a desert and water. The easiest way to do this was to use the find in page tool in your browser to search for ‘desert’. This was relevant to only a few items and so you could easily work out which ones just required water to be formed, by going through them manually. There was only one item that could be formed by these two items and it also happens to be the name of a band, hence the musical clue.

Therefore the answer is OASIS.