Chart-based stories on Elvis Presley vs JXL, Nelly, and Celine Dion.

ON-AIR CONVERSATION: There's been a lot of discussion in "Chart Beat" about the lack of airplay for Elvis Presley vs JXL's "A Little Less Conversation" (RCA), which has kept the nation's best-selling single from moving higher than No. 50 on The Billboard Hot 100. But there is at least one radio format that is giving the remixed tune some spins. "Conversation" is the highest new entry on the Adult Top 40 Tracks chart, debuting at No. 37. It is Presley's first appearance on this chart -- and yes, it's JXL's first time on Adult Top 40 Tracks as well.

Meanwhile, "Conversation" continues to drop on the Hot 100, falling 60-69 in its third chart week.

FOR HE'S A JOLLY GOOD NELLY: Nelly must be getting accustomed to sitting atop the Billboard charts. His "Nellyville" CD is No. 1 on The Billboard 200 for the third week, and the first radio hit from the set, "Hot in Herre" (Fo' Reel/Universal) is in pole position on Billboard's Hot 100 for the fifth week.

Now, it looks like Nelly's hottest competition for the No. 1 slot on the Hot 100 is himself. The track he recorded with Kelly Rowland (from Destiny's Child), "Dilemma," zooms 26-8 in its third chart week, an amazingly rapid climb.

Nothing else in the top-10 seems capable of unseating "Hot in Herre." Eminem is No. 2 for the fifth week with "Without You," but that track seems certain to slide next week. Avril Lavigne continues her upward movement, advancing 4-3 with "Complicated" (Arista). She's within reach of capturing the No. 2 spot next week, but is presently too far behind "Hot in Herre" in terms of airplay to make a serious bid for No. 1. At No. 4, "Hero" (Columbia/Roadrunner) by Chad Kroeger featuring Josey Scott is already declining, and although it's bulleted at No. 5, "I Need a Girl (Part Two)" by P. Diddy & Ginuwine featuring Loon, Mario Winans & Tammy Ruggeri doesn't have the stamina to go all the way.

WHERE THE 'DAY' GOES: Chart-watchers will be keeping a close eye on Billboard's Adult Contemporary chart next week to see if Celine Dion ties the all-time record for longest-running No. 1 song. "A New Day Has Come" (Epic) is in its 18th week on top, the second-longest run in pole position in this chart's history.

Two songs are tied for first place, with 19 weeks each: "You'll Be in My Heart" by Phil Collins and another Dion song, "Because You Loved Me."