This 23-year-old Londoner is being hailed as "the U.K.'s answer to Lady Gaga," which might say more about the U.K.'s desire to answer to Lady Gaga than it does about Jessica Ellen Cornish. She's got a brash, broad voice and a be-yourself message. But Jessie is less show-stealing diva than impersonal pop technician (she co-wrote Miley Cyrus' "Party in the USA"). Her debut sounds like a collection of demos for other singers - Natasha Bedingfield on the down-to-earth "Price Tag," Katy Perry on the Dr. Luke-assisted "Abracadabra," Rihanna on the gender-flipping "Do It Like a Dude." It's well-meaning, well-crafted and confused. Sometimes versatility can be a vice.

Listen to "Price Tag (Featuring B.o.B.)":

Jessie J Makes Her Big American Debut on 'SNL'

“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.