There are 3 great songs - music and words as power-points on Twinkl. If you log in you can download them.
I'm a Little Alien (I'm a Little Teapot tune)
Aliens from Outerspace Song (Twinkle Twinkle tune)
https://www.twinkl.co.uk/resource/t-t-2546127-aliens-from-outer-space-song-powerpoint
In a Spaceship Song (Frere Jacques tune)