Hopefuls flock to Boston to audition for the judges. '

The auditions continue on the second part of two-night season premiere of American Idol as the judges continue their quest to find the next singing superstar from Atlanta, Georgia.

' Auditions continue as hopefuls perform for the judges in Chicago.

' Auditions continue in Orlando, Fla.

' Auditions continue in Los Angeles; Avril Lavigne and Katy Perry act as guest judges.

The judges continue their quest to find the next singing superstar in the Lone Star State with guest judges Neil Patrick Harris and Joe Jonas. Don't miss the auditions that everyone will be talking about the next day

The judges continue their quest to find the next singing superstar in the "Mile High City" with returning guest judge Victoria Beckham. Don't miss the auditions that everyone will be talking about the next day.

It is the last of the Season Nine auditions. Join Simon, Kara and Randy as they continue their quest to find the next singing superstar. Don't miss the auditions everyone will be talking about the next day

American Idol's newest judge, Ellen DeGeneres, joins Simon Cowell, Kara DioGuardi and Randy Jackson in Hollywood to begin winnowing down the contestants. The golden ticket contenders chosen from around the nation will endure a grueling rehearsal schedule and pressure-packed auditions as they vie for a coveted spot among the Top 24. Find out who will survive and who will go home during round 1.

The pressure mounts as the Hollywood Round contestants must perform once again for Simon, Ellen, Kara and Randy in hopes of securing a spot in the Top 24. See who makes it through to another day when round 2 continues.

The Hollywood round continues, with a gradually dwindling contingent of contestants vying for a slot in the Top 24

The judges make their final cuts tonight, and this season's semifinalists - 12 boys and 12 girls - are revealed tonight.

The Top 12 female semifinalists take the American Idol stage for the first time to perform live for the judges and for the nation. On this season's first night of voting, the contestants will sing their hearts out in hopes of winning America's vote and surviving another week in the competition.

The Top 12 male semifinalists sing their hearts out live for America and the American Idol judges. After the performances, it is up to America to vote. Performing Tonight Are: Aaron Kelly Alex Lambert Andrew Garcia Casey James Jermaine Sellers Joe Munoz John Park Lee Dewyze Michael Lynche Tim Urban Todrick Hall Tyler Grady

Four contestants are eliminated; Kris Allen performs and shares footage of his recent trip to Haiti; Allison Iraheta performs.

Top 10 Male Semifinalists Perform

Top 10 Female Semifinalists Perform

Four more semifinalists - two girls and two boys - will be eliminated from the competition and sent home tonight after America's vote is revealed. Tune in to see if your favorites make the cut.

The eight female semifinalists perform live for America and the American Idol judges. After the performances, it is once again up to America to vote. Tune in to see who sizzles and who fizzles. Performing Tonight Are: Crystal Bowersox Didi Benami Katelyn Epperly Katie Stevens Lacey Brown Lilly Scott Paige Miles Siobhan Magnus

The eight male semifinalists perform live for America and the American Idol judges. After the performances, it is once again up to America to vote. Tune in to see who sizzles and who fizzles. Performing Tonight Are: Crystal Bowersox Didi Benami Katelyn Epperly Katie Stevens Lacey Brown Lilly Scott Paige Miles Siobhan Magnus

Top 16 Results Show

The Top 12 finalists take the stage to perform live for the nation! After the performances, it is once again up to America to vote. Tune in to see who sizzles and who fizzles. This Week's Theme Is: Rolling Stones Performing Tonight Are: Aaron Kelly Andrew Garcia Casey James Crystal Bowersox Didi Benami Katie Stevens Lacey Brown Lee Dewyze Michael Lynche Paige Miles Siobhan Magnus Tim Urban

The Top 12 finalists find out who is safe and who will be sent home during the results show live. Tune in to see if your favorites make it.

The Top 11 finalists take the stage to perform live for the nation! After the performances, it is once again up to America to vote. Tune in to see who sizzles and who fizzles.

The Top 11 finalists find out who is safe and who will be sent home during the results show tonight.

The Top 10 finalists take the stage to perform live for the nation! After the performances, it is once again up to America to vote. Tune in to see who sizzles and who fizzles live. Tonight's Mentor: Usher Tonight's Theme Is: R&B songs Performing Tonight Are: Aaron Kelly Andrew Garcia Casey James Crystal Bowersox Didi Benami Katie Stevens Lee Dewyze Michael Lynche Siobhan Magnus Tim Urban

Usher performs; another contestant is eliminated.

The nine remaining finalists take the stage to perform live for the nation! After the performances, it is once again up to America to vote. Tune in to see who sizzles and who fizzles live. Tonight's Theme Is: Lennon/McCartney Songbook Performing Tonight Are: Aaron Kelly Andrew Garcia Casey James Crystal Bowersox Katie Stevens Lee Dewyze Michael Lynche Siobhan Magnus Tim Urban

The nine remaining finalists find out who is safe and who will be sent home during the results show live.

The nine remaining finalists - again - take the stage to perform live for the nation! After the performances, it is once again up to America to vote. Tune in to see who sizzles and who fizzles live. Tonight's Theme Is: Performing Tonight Are: Aaron Kelly Andrew Garcia Casey James Crystal Bowersox Katie Stevens Lee Dewyze Michael Lynche Siobhan Magnus Tim Urban

Adam Lambert performs; two contestants are eliminated.The nine remaining finalists find out who is safe and which two will be sent home live.

The seven remaining finalists take the stage to perform live for the nation! After the performances, it is once again up to America to vote. Tune in to see who sizzles and who fizzles. This Week's Theme Is: Inspirational Songs This Week's Mentor Is: Alicia Keys Performing Tonight Are: Aaron Kelly Casey James Crystal Bowersox Lee Dewyze Michael Lynche Siobhan Magnus Tim Urban

American Idol once again hosts Idol Gives Back, a music celebration raising awareness and benefiting various U.S. and international charities that will feature performances and appearances by some of Hollywood's biggest stars! Additionally, the seven remaining finalists find out who is safe and who will be sent home live on this special night.

The Top 6 Finalists perform as they continue on their journey to try and become the next American Idol! Be sure to watch and see who impresses Simon, Kara, Randy and Ellen when American Idol airs live. This Week's Theme Is: Shania Twain Songs This Week's Mentor Is: Shania Twain Performing Tonight Are: Aaron Kelly Casey James Crystal Bowersox Lee Dewyze Michael Lynche Siobhan Magnus

Last night, American Idol's Top 6 Finalists performed their hardest in hopes of advancing to get one step closer to becoming the next American Idol. Tonight find out who makes the Top 5, and who will be sent home live.

The five remaining finalists take the stage to perform Live for the nation! After the performances, it is once again up to America to vote. Tune in to see who sizzles and who fizzles. Tonight's Theme Is: Frank Sinatra Songs Tonight's Mentor Is: Harry Connick Jr. Performing Tonight Are: Aaron Kelly Casey James Crystal Bowersox Lee Dewyze Michael Lynche

The five remaining finalists find out who is safe and who will be sent home live leaving 4 contestants to remain.

The four remaining finalists take the stage to perform live for the nation! After the performances, it is once again up to America to vote. Tune in to see who sizzles and who fizzles . This Week's Theme Is : Songs from the movies This Week's Mentor Is: Jamie Foxx Performing Tonight Are: Casey James Crystal Bowersox Lee Dewyze Michael Lynche

Another contestant is voted off.

The three remaining finalists take the stage to perform LIVE for the nation! After the performances, it is once again up to America to vote. Tune in to see who sizzles and who fizzles. This Week's Theme Is: Performing Tonight Are: Casey James Crystal Bowersox Lee Dewyze

Another contestant is voted off.

The final two contestants take the stage to battle it out on the last performance show of the season at the NOKIA Theatre L.A. LIVE in Los Angeles. One will be the next American Idol, and one will be sent home. Tune in to see who impresses the judges and who buckles under pressure live. Tonight's Theme Is: Performing Tonight Are: Crystal Bowersox Lee Dewyze