"E.T." Is A Song By American Recording Artist Katy Perry From Her Third Studio Album Teenage Dream 2010 . Written By Perry Dr. Luke Max Martin And Ammo And Produced By The Last Three It Was Released As The Album's Third Promotional Single On August 17 2010. The Song Was Later Announced As The Album's Fourth Single And Released On February 16 2011. The Single Version Features Vocals By American Rapper Kanye West Who Also Appears In Its Floria Sigismondi-Directed Music Video Released On March 31 2011. Over A "stomp-Stomp-Clap" Beat Similar To Queen's "We Will Rock You" 1977 "E.T." Is An Electronic Ballad That Tells Of "falling In Love With A Foreigner". Extraterrestrial Metaphors Are Used Throughout And West Continues These Metaphors In His Two Verses Making Heavy Use Of Auto-Tune At Times. The Song Peaked At Number One In The U.S. Canada New Zealand And Poland As Well As Within The Top Five In Australia Ireland And The United Kingdom And The Top Twenty In Ten Other European Countries. Background The Decision To Write "E.T." Came After Its Beat Was Accidentally Played In The Recording Studio—it Was Originally Intended For American Hip Hop Group Three 6 Mafia. Admiring Its Acoustics Perry Chose To Work With The Track Wishing To Write A "futuristic Alienistic Song". Following Up To The Release Of Teenage Dream "E.T." Was Released As The Third And Final Promotional Single On August 17 2010. In December 2010 Perry Asked Fans For Their Opinion On Teenage Dream's Next Single Through The Social Networking Site Twitter. Speculation Arose That "Peacock" Would Be Its Next Single But "E.T." Was Eventually Announced As The Record's Fourth Single Through Her Facebook Page. The Announcement Was Accompanied By The Single's Artwork Which Features Perry With Cat Eye Make-Up Bangs And A Sequined Top. The Single Version Features Vocals From American Rapper Kanye West And Was Released On February 16 2011. Personnel * Ammo – Composer Drums Keyboards Programming Producer * Megan Dennis – Production Coordination * Serban Ghenea – Mixing * Jon Hanes – Mix Engineer * Sam Holland – Engineer * Dr. Luke – Composer Drums Keyboards Programming Producer * Max Martin – Composer Drums Keyboards Programming Producer * Katy Perry – Composer Vocals * Irene Richter – Production Coordination * Tim Roberts – Assistant Mix Engineer * Vanessa Silberman – Production Coordination * Emily Wright – Engineer Credits Adapted From Teenage Dream Album Liner Notes.