Chart-Toppers Willie Nelson, B.B. King Team Up

On heels of their current hit albums, the two Americana legends will be heard in a duet on "The Thrill Is Gone"

Willie Nelson soon will be riding with the King.

For his upcoming all-blues album, Milk Cow Blues, Nelson, whose Me and the Drummer tops the Gavin Americana chart for the third straight week, collaborated with B.B. King, who, along with Eric Clapton, leads the Billboard Top Blues Albums chart for the 10th consecutive time with Riding With the King.

Due Sept. 19, Milk Cow Blues features the two legends of American popular music in a duet on King's signature song, "The Thrill Is Gone." Nelson also works with, among others, young guitarists Kenny Wayne Shepherd, whose Live On is #3 on this week's blues chart, and Jonny Lang, whose Wander This World is #4.

Riding With the King continues to be a presence on the Billboard 200 pop album sales chart as well, placing 14th this week, down from #12 the previous two weeks.

The rest of the Top Blues Albums are Johnnie Taylor, Gotta Get the Groove Back at #2; Stevie Ray Vaughan and Double Trouble, Blues at Sunrise at #5; Shannon Curfman, Loud Guitars, Big Suspicions at #6; Etta James, whose Best of Etta James moves to #7 from #9; Stevie Ray Vaughan and Double Trouble, The Real Deal: Greatest Hits Volume 2 at #8; B.B. King, Best of B.B. King: The Millennium Collection at #9; and Indigenous, Circle at #10.

The Gram Parsons Notebook — Last Whipporwill (Shell Point/Echo Music) makes its top-10 debut at #9 on the Americana chart, a survey of radio airplay of folk, bluegrass and alt-country music. A greatly influential performer, whose music touched on all of those styles, Gram Parsons (1946–1973) is honored by followers such as John Nuese, Carl Jackson and Jim Lauderdale — he sings "Blessing for Being" (RealAudio excerpt) — the featured artists on this project composed songs to accompany lyrics found in one of Parsons' notebooks.

Rounding out the top 10 on the Americana chart are: Steve Earle, Transcendental Blues at #2; Max Stalling, Wide Afternoon at #3; Allison Moorer, whose The Hardest Part jumps to #4 from #8; Joe Ely, Live at Antone's at #5; Little Feat, whose #6 Chinese Work Songs switches places with Tish Hinojosa's Sign of Truth at #7; the various-artists Transatlantic Sessions, dropping to #8 from #5; and Hank Thompson, the country icon who celebrates Seven Decades by hitting #10.