Carrie Underwood, who only a month ago became the fourth winner of "American Idol," now has country's top single with her "Inside Your Heaven."
Underwood is only the third artist to bow in the top slot since chart policy changed in 1998 to allow airplay-only tracks on the Hot 100, Billboard said.
"Inside Your Heaven" also debuts at No. 1 on the Pop 100, where Gwen Stefani's "Hollaback Girl" falls to No. 4 after eight weeks on top.