The Kentucky native revealed the news via Instagram on Sunday evening, just moments after the show started.
“Yes, I’m performing from my room! Was not planned, I’d much rather be on that stage with the other contestants, but Covid said otherwise,” he wrote. “Voice is rough but I’m gonna give it my all guys, thank y’all so much for any support.”
Fans can still vote for Noah Thompson by texting 2 to 21523.
Thompson, a former construction worker, became an instant fan-favorite following his memorable Idol audition.
He auditioned for the show with Kameron Marlowe’s “Giving You Up,” which earned recognition from Marlowe and praise from Lionel Richie.
Throughout the season, Thompson went on to cover songs such as Cam’s “Burning House,” The SteelDrivers’ “Blue Side Of The Mountain” and Jason Isbell’s “Cover Me Up.”
Katy Perry once called Thompson “the American Dream,” while Luke Bryan later declared Thompson “might win the whole competition” after he praised the “magic quality” he has “going on in [his] voice.”
Thompson has also impressed the Idol judges and America with countrified renditions of pop hits such as Noah Cyrus’ “July,” Rihanna’s “Stay,” Harry Styles’ “Falling,” Ben E. King’s “Stand By Me,” and John Mayer’s “Heartbreak Warfare.”