E.T. is the fourth single off Katy’s Grammy-nominated album Teenage Dream that hit No. 1 on the iTunes chart. The album, which has been nominated for Album of the Year Grammy, Best International Album Brit Award and just won a Juno for Best International Album boasts the previous three singles, California Gurls, Teenage Dream, and Firework which all peaked at No. 1 on the Billboard Hot 100 chart, making Katy the first female artist in 11 years to score three No. 1 singles from one album.