It was Angie Miller's night on "American Idol" Wednesday, as the 18-year-old from outside of Boston stole the show from her fellow females in the top four.

Miller dominated an evening that saw the "Idols" taking on three songs: A song of their choice, a one-hit wonder and a duet. "You came out tonight to snatch some wigs off some heads, honeychild," Nicki Minaj told Miller, after her show-closing rendition of "Cry Me a River" (Julie London's, not Justin Timberlake's). "Tonight was your night."

Earlier in the night, Miller sat down at her piano and punched up Jessie J's "Who You Are," which brought three of the four judges to their feet. (Mariah Carey explained she would have gotten up, but the train to her dress was caught underneath her chair, at least the second time this season she's blamed her wardrobe for not participating in a standing ovation.) "That was 10 out of 10 out of 10 for me!" gushed an enthused Randy Jackson, who did not explain what the third 10 was for. Said Nicki, "There is no one that compares to you in this competition when you're at the piano."

Miller also excelled during her duet with Candice Glover, as the two took on Rihanna's "Stay." The performance came immediately after Kree Harrison and Amber Holcomb teamed up on Adele's "Rumor Has It," and Miller and Glover wiped the floor with their opponents. "Unbelievable! That's how you do a duet, that's how you do it right there!" said Jackson.

Glover cheated slightly in her One Hit Wonder selection, doing Samantha Sang's late '70s hit "Emotion," which was later a Top 10 hit for Destiny's Child. (If a song has been a hit twice, is it really a One Hit Wonder?) Glover was battling a cold during the show but pulled through in her performance, although Keith Urban remarked it wasn't the type of song that was going to blow everyone away. Earlier, her version of Drake's "Find Your Love" "took me to a place where I needed to be," said Carey, though Jackson criticized her vocal phrasing. "You can't always sound like you're in church," he said.

Amber Holcomb opened the show by tackling Celine Dion's "The Power of Love," and was praised for climbing Mount Dion without breaking a sweat. "That was an amazingly perfect song choice for you," Urban told her. Holcomb's second song, Richard Harris' "MacArthur Park" (seriously, what bizarre list of One Hit Wonders were the contestants choosing from?) was lovingly received by the judges but dismissed as "corny" by Jimmy Iovine, which caused dissention among the judges' ranks and prompted Nicki Minaj to run on stage and mock-choke Iovine. Jackson followed Minaj on stage, leaving only Carey and Urban at the judges' table, and Carey responded by acknowledging Urban's existence for what seemed like the first time in months. Good times!

Kree Harrison was a victim of a pair of poor song choices, opening with Susan Tedeschi's "It Hurts So Bad" and closing with Procol Harum's "A Whiter Shade of Pale." Minaj was harsh after the first song, saying it was "not a top four-worthy performance," and while she liked the second song, she predicted Harrison would land in this week's bottom two. "Something about what's on the inside seems to be dimming a little bit," she said.

But will Harrison go home this week? Ryan Seacrest teased a "surprise twist in the competition" that would be announced during Thursday's results show, so anything could happen.

What did you think of Wednesday's "Idol" performances? What do you think the "twist" is going to be? Let us know in the comments!

Get your "Idol" fix on MTV News' "American Idol" page, where you'll find all the latest "Idol" news, interviews and opinions.