I knew that flute was used on Walter...the tragic hero who saves Daniels from being killed by David. But he loves Daniels...?This was online hours ago and cached on google ...
At the end only Danny McBride and Katherine Waterson's character survive. David killed Shaw and replaces Walter as the robot, while holding the embryos on the escape ship. It is implied that he will continue to experiment upon humans and eventually become the creator of the Xenomorph, and that is why Weyland Corp. created a second version (Walter) since David is abit fucked up in the head.