The best thing about this version of Perry's leaden electro-pop jam is Yeezy flinging a pitch-shifted 16 before the song really begins — though rhyming "astronaut" with "get ass a lot," he sounds like he's checking his diamond-profile wristwatch.

Listen to "E.T. (feat. Kanye West)":

Gallery: Katy Perry's Best Looks

“Oh Sherrie”

Steve Perry's girlfriend Sherrie Swafford was actually in the studio when Perry began writing this song--his lone Top Ten hit as a solo act--with two co-writers. The trio began at midnight one night with just "Oh, Sherrie!" and "hold on, hold on." Three hours later, they had a complete song. Swafford, however, had to wait until the next day to hear it. "Sherrie actually got tired and went to bed," Perry said. She also appeared in the video, but their relationship did not hold on for long.