Ke$ha's guide to Star Party

Home: Miami.

Fact: First artist signed to Warner Bros. by "American Idol" judge Kara DioGuardi.

Hits: "Whatcha Say," "In My Head." Also co-wrote Pitbull's "My Life" and Iyaz's "Replay."

Ke$ha says: "He's a sweetheart and has a beautiful voice."

Home: Atlanta.

Fact: Guests on his album include T.I., Eminem, Paramore's Hayley Williams and Weezer's Rivers Cuomo.

Hits: "Nothin' on You," "Airplanes."

Home: London.

Fact: Named his album "Rokstarr" after a line of sunglasses.

Hit: "Break Your Heart." Also has written and produced for Justin Timberlake, Britney Spears and Pussycat Dolls.

Ke$ha says: "I just filmed a video with him in the U.K. for a song called 'Dirty Picture.' He's an incredible songwriter and one foxy dude -- and one of the sweetest people you'll ever meet."

Home: Adelaide, Australia.

Hit: "According to You," "Shut Up and Kiss Me." Also has played with Carlos Santana, Carrie Underwood and Adam Lambert.

Ke$ha says: "She's an incredible guitar player."

Home: San Francisco.

Fact: "Drops of Jupiter" earned Grammys for best rock song and best arrangement.

Hits: "Hey, Soul Sister," "Drops of Jupiter," "Meet Virginia." Frontman Pat Monahan also duets on Kris Allen's new "The Truth."

Home: Los Angeles.

Fact: They had the most played radio song of 2001 ...

Hit: "Hanging by a Moment."

Ke$ha says: "I'm excited to meet them."

Home: Nashville.

Hits: "Tik Tok," "Blah Blah Blah," "Your Love Is My Drug." Also co-wrote songs for the Veronicas and Miley Cyrus.