American Idol Season 9 Top 12: Who made the cut?

Ladies and gentlemen, get ready for the main event: "American Idol" has selected its top 12 singers of season nine.

The semifinal phase of the competition ended when four singers were eliminated on Thursday. Next week, the top 12 will tackle songs by the Rolling Stones.

Haven't been watching? Here's a quick rundown of the remaining singers:

Aaron Kelly: This teenager specializes in country music. He's been compared to "Idol" alum David Archuleta, but many viewers still aren't sold on his vocals.

Andrew Garcia: He wowed judges and fans with his stellar cover of Paula Abdul's "Straight Up" in Hollywood, but struggled during semifinals. He needs another "moment" -- ASAP.

Casey James: The guitar-playing rocker is known for both his vocals and his ability to make judge Kara DioGuardi's heart flutter. Is he more than just good eye candy?

Crystal Bowersox: The current front-runner, she's a dreadlocked rocker mom who made headlines when her hospitalization forced a schedule change during semifinals.

Didi Benami: She's an acoustic songstress who sings to honor a best friend who passed away. She initially struggled during semifinals, and some fans think she's too emotionally fragile for "Idol."

Katie Stevens: This teenager was once a front-runner, but she had a hard time with song choices during semifinals. It seems like she can't shake a pageant vibe.

Lacey Brown: This singer, who narrowly missed the semifinal cut last year, is one of the biggest surprises in the top 12. She didn't really impress judges until the final week of semifinals.

Lee DeWyze: He's a rocker with a strong voice, but weak stage presence. Can he conquer his nerves to secure a following?

Michael Lynche: "Big Mike" entered the competition as a good back story -- his wife gave birth while he was competing in Hollywood. As semifinals progressed, he proved he's a competitive threat.

Paige Miles: She's another surprise in the top 12. She has a strong voice, but chooses notoriously bad songs.

Siobhan Magnus: This quirky vocalist had a big moment in semifinals when she hit an unrivaled high note while singing Aretha Franklin's "Think." But some fans think she isn't too marketable.

Tim Urban: He entered the semifinal phase only after male contestant Chris Golightly was disqualified. Initially, he seemed primarily backed by Vote for the Worst, but the judges supported him during the final week of semifinals.