Kristin Chenoweth, Jennifer Holliday to Perform on Tonight's IDOL Finale

On tonight's AMERICAN IDOL season finale, Broadway vet Kristin Chenoweth and Top 2 finalist Jessica Sanchez will perform a duet of the late Donna Summer's hit single, 'No More Tears (Enough is Enough)'. Summer originally performed the disco song with superstar Barbra Streisand in the late 1970's. The segment was pre-taped after last night's live episode of Idol and will air during tonight's season finale.

The coincidence here is that Chenoweth has been performing this song in her concert tour, with Chelsea Packard and Idol's producer, Nigel Lythgoe, was in the audience on the Saturday night she performed at the legendary Greek Theater in Los Angeles.

After the taping, Chenoweth shared her excitement with fans on her Twitter account, posting, "I just had a great experience. I will tell everyone about it tomorrow night!" later tweeting, "I was so excited and nervous. And proud of my duet partner."

Also on tonight's season finale, Jennifer Holliday, the original Effie in Broadway's Dreamgirls, will take her turn duetting with Sanchez. The star tweeted yesterday, HAPPY 2 ANNOUNCE: Jennifer Holliday & Jessica Sanchez WILL SING A DUET 4 THE "AMERICAN IDOL SEASON FINALE"- WED.,MAY 23RD ON FOX TV @8:00PM Holliday also posted a photo of herself with Sanchez during a rehearsal for tonight's show. Holliday will be once again performing the role of 'Effie', for the final time this summer in a highly anticipated run of DREAMGIRLS at The Muny.

Earlier this month on 'American Idol' pint-sized powerhouse Sanchez wowed the judges with her performance of 'And I'm Telling You,' but they weren't the only ones who were impressed. Holliday wrote on her Twitter page immediately following the performance: 'Yes, I was at home watching when Jessica Sang My Song 2Nite.. My Heart was beating fast &I was overwhelmed! So PROUD!'

The AMERICAN IDOL season finale airs tonight at 8:00 pm/ET on the FOX network.

Chenoweth won a Tony Award for her role as Sally Brown in the Broadway musical You're A Good Man, Charlie Brown. She is also celebrated for originating the role of Glinda in Wicked, which also earned her a Tony Award nomination. In 2010, she appeared as Fran Kubelik in Promises, Promises alongside Sean Hayes.

Holliday made her Broadway debut in YOUR ARMS TOO SHORT TO BOX WITH GOD at the age of 19. After winning a Tony at the age of 21 for DREAMGIRLS, Holliday performed in GREASE and CHICAGO. She has made a singing career, off Broadway, with eight albums and two Grammy awards.