An "electronic and hip hop ballad" influenced by dubstep, techno, and drum and bass.
Perry plays an alien drifting through space who eventually lands on an abandoned Earth. Kanye West E T Ft Katy
It reached the top 10 in over 10 countries, including the UK, Australia, and Canada. An "electronic and hip hop ballad" influenced by
She wore three distinct styles (space being, angelic songstress, warrior princess) that each took 5–6 hours to apply. including the UK
He raps from the perspective of an alien lover, using lines like "I know a bar out in Mars" and referencing being a "big-headed astronaut".
Perry described the song as being about "falling in love with a foreigner".