NASHVILLE — Twelve-year-old Billy Gilman is achieving the unthinkable: threatening the Dixie Chicks' control of the #1 spot on the Billboard Top Country albums chart.

This week, Gilman's One Voice album vaults from #4 to #2 on the chart, narrowly trailing the Chicks' Fly album. One Voice also jumps to #34 from #45 on the Billboard 200 albums chart.

Gilman's single, "One Voice" (RealAudio excerpt), is still #1 on the Country Single Sales chart and #25 on the Hot Country Singles & Tracks chart, reflecting radio airplay.

Lee Ann Womack enjoys her fourth consecutive week atop the Hot Country Singles & Tracks chart. Lonestar's "What About Now" moves to #2, Rascal Flatts' "Prayin' for Daylight" goes up to #3, and Alan Jackson's "It Must Be Love" moves up to #4.

Reba McEntire's "I'll Be" slides to #5; Eric Heatherly's "Flowers on the Wall" moves up to #6; Chad Brock's "Yes" drops to #7; Tim McGraw's "Some Things Never Change" rises one position to #8; Jo Dee Messina's "That's the Way" goes up one notch to #9; and the Dixie Chicks' "Cold Day in July" rises to #10.

New on the chart this week are "Waitin' on Sundown" by Andy Griggs at #64; "My Love Goes On and On" by Chris Cagle at #65; "You Call That a Mountain" by B.J.Thomas at #66; "I'm Gonna Love You Anyway" by Trace Adkins at #67; "Meanwhile Back at the Ranch" by the Clark Family Experience at # 70; and "I Can't Lie to Me" by Clay Davidson at #74.

There are no new entries this week on the Top Country albums chart, and the top 10 remains about the same, apart from Gilman's climb.