“I am still overwhelmed and in shock from last night. The response to ‘Piece By Piece’ has me in tears,” Clarkson tells EW in a statement. “To say last night was nostalgic would be an understatement. It was an unforgettable moment and to have my family and friends there with me made it even more magical.”
The 33-year-old singer, who won Idol‘s first season in 2002, returned to her roots Thursday night with a guest judge spot and a stunning rendition of her 2015 hit “Piece by Piece.” Her appearance rang in the final round of top 10 contestants for the singing competition, which will end April 7 after its 15th season. Following the show, the single’s sales spiked, hitting No.1 on iTunes and bumping her latest album to the No. 3 spot on the album chart. Watch the full performance below.