"Idol" Finale Preview: Musical Guests Announced, Kara DioGaurdi's Future Unclear

Ryan Seacrest announced on his radio show Monday morning that Lionel Richie, Carlos Santana, Cyndi Lauper, Queen Latifah, Black Eyed Peas, Keith Urban, David Cook, and Carrie Underwood will perform along with finalists Adam Lambert and Kris Allen on the final two episodes of this season's "American Idol."

"Idol" fans are tweeting about the star-studded lineup:

1. 
   bloozler Heard that Keith Urban was going to be performing on the American Idol Finale!! Way to go Ryan and the whole American Idol gang!!!
2. 
   FOX5Atlanta As if Idol couldn't get any better!! Lionel Richie, Santana, Cindi Lauper, Queen Latifah are set to perform during this season finale week.
3. 
   twigsandheather Idol finale line up - not so rocking . Taking Lionel Richie out of the pickle jar on Wed. I was hoping for Axl Rose. A gal can dream.
4. 
   Honeyowens So glad Keith Urban is going to be on the Idol Finale
5. rickyworley Ok. Update from Hollywood!! Black Eyed Peas to perform at Idol this week! SUPER EXCITED! BOOM BOOM POW!
6. 
   

Seacrest also tweeted links to Twitter accounts of some of the season's finalists, who will be in attendance for the finale.

As this season of "Idol" wraps up, the Twitterverse is wondering if the show's newest addition, Kara DioGuardi, will continue as a judge next season. Today, Newsday.com reported a Fox executive said in a conference call with reporters that "couldn't comment on that right now." Newsday.com mused that this meant either Kara is currently negotiating her contract with Fox, or she won't be returning at all.

Twitter users overwhelmingly tweeted that they won't miss the newest judge if she leaves:

1. 
   brettmjellison really hopes Kara is not a judge on American Idol next season! She brings nothing to the show!
2. 
   lunaasul I really think that Kara has a problem with Simon #American Idol. I don't see her next season(if they do another) Honestly I don't like her
3. 
   mjloomis Finds that Kara DioGuardi contributes nothing original, if she replaces Simon next season, I'm never watching again!
4. 
   gwoman1 @RyanSeacrest Oh, and by the way tell me nothing is going to change for next season, maybe except for Kara.
5. 
   Idolfanaddict @Idol360 I really hope there is some chance in Heaven & earth that Kara will not return next season...I hope...I dream!

Be sure to check back here after tomorrow night's show to see the Twittersphere's reaction to part one of the finale!

David Cook's Brother Loses Cancer Battle

This morning, before the 12th annual Race for Hope 5K in Washington, D.C., American Idol winner David Cook announced that his older brother Adam died yesterday after a long battle with brain cancer, reports PEOPLE.com.

"I actually lost my brother yesterday to a brain tumor and I couldn't imagine being anywhere else right now," Cook, 26, told the crowd at the benefit for brain cancer research. Adam Cook, 36, had been fighting the disease for a decade, but thankfully at least had the opportunity to see his little brother perform on Idol.

Per Entertainment Weekly, fans can make donations to David's Race for Hope team through September 30.

Twitterers expressed their sadness over the news.

1. 
   BLKMGK Awww, I just found out that David Cook's brother died :(
2. 
   disappear23 Just heard that David Cook's brother died from cancer... so sad... =[
3. 
   stacy_anne4 A lot of us are lighting a candle for David Cook's brother Adam at 5pm PST/8pm EST tonight. Please join us. Rip. <3
4. 
   vanessajonas RIP David Cook's brother, Adam. : ( mobile web
5. 
   newenglanddjs Sad news.. American Idol winner David Cook's brother passed away.... He supported his brother through the show..
6. 
   alvahsmommy just heard about David Cook's brother...I feel for him and his family, I know how it feels to loose loved ones to cancer.RIP mom and dad
7. 
   SimplyStar Aw, I remember when David Cook's brother, Adam pushed him to go on Idol. He passed away today. Rest in Peace. Light a candle at 8pm EST.