Lets not let our imaginations run away with themselves, the spiraling lights are a relatively rare and beautiful NATURAL phenomenon, they are the result of an icy chunk of debris, maybe from a comet that gets caught by earths gravity and falls to earth, as it falls it vents gas as it heats up causing it to spiral. Then it finally disipates in a large ring as it burns up.
Can't shed any light on the sounds though.
Critisis everything, everything you hear, everthing you see.
If you want to believe anything make sure there is evidence, if there isn't evidence, then why believe?