Bon Jovi and Jennifer Nettles still haven't relinquished their grip at the top of Billboard's country singles chart, but Jason Aldean and Dierks Bentley are moving forward with their efforts to claim the prize in the coming weeks.

Meanwhile, the Top 10 on Billboard's country album chart is locked up tighter than ... well ... feel free to fill in the blank.

"Who Says You Can't Go Home," Bon Jovi's duet with the Sugarland vocalist, spends a second week at No. 1, although Aldean inches up one slot to No. 2 with "Why." Rascal Flatts' recent No. 1, "What Hurts the Most," descends to No. 3 as Bentley climbs two rungs to land at No. 4 with "Settle for a Slowdown." Jack Ingram's first Top 10 single, "Wherever You Are," slips a notch to No. 5 while Faith Hill's "The Lucky One" moves up one level to No. 6 and LeAnn Rimes' "Something's Gotta Give" stays at No. 7 for a second week. Tim McGraw's "When the Stars Go Blue" rises one position to No. 8. Joe Nichols makes a five-position jump to land at No. 9 with "Size Matters (Someday)," and Phil Vassar's "Last Day of My Life" moves up three spots to round out the Top 10.

Trace Adkins' "Swing" enters the chart at No. 47 for the strongest showing of four singles debuting this week. Rio Grand, a country quartet from Texas, arrive at No. 53 with "Kill Me Now," their first single for Curb-Asylum. The song is yet another title co-written by Big & Rich's John Rich. Chris Cagle shows up at No. 57 with "Anywhere but Here," and Sammy Kershaw returns to the charts at No. 58 with "Tennessee Girl," his first single for the independent Category 5 label.

On the country albums side, two titles swap places in the Top 10, but that's the only movement at the upper level. Remaining in first through seventh positions, respectively, for a second week are: Rascal Flatts' Me and My Gang, Toby Keith's White Trash With Money, McGraw's Greatest Hits Vol. 2, Alan Jackson's Precious Memories, Carrie Underwood's Some Hearts, The Legend of Johnny Cash and Keith Urban's Be Here. The swap comes between Rascal Flatts' Feels Like Today (to No. 8) and the Walk the Line soundtrack (to No. 9). This marks Josh Turner third consecutive week at No. 10 with his latest, Your Man.

Newcomer Michael Lee Austin has the only country album debuting this week. Labor Pains, released on the independent Alive label, bows at No. 63.

Elsewhere on the country albums list, two familiar names racked up notable sales gains. Van Morrison's Pay the Devil moves to No. 22 from No. 24. In its 77th week on the chart, Shania Twain's triple-platinum Greatest Hits enjoys a sales spike to leap to No. 37 from No. 46.