This has been our most difficult and perilous project to date. No one before us had ever managed to record aliens laughing. We managed to record some of them here on Earth, but others required stealth and even secret trips on board the aliens' spaceships. Two of our researchers never came back, though they managed to dispatch their recordings before disappearing. Some of these aliens are relatively friendly, some less so, and some downright hostile, who would eat you or vaporise you as soon as look at you. Each alien type is described on its page. Enjoy listening, but remember, they're out there, and if they know you're listening to a stolen laugh, they may come after YOU!