iHeartRadio Music Festival
Kelly Clarkson performs at the 2011 iHeartRadio festival at the MGM Grand in Las Vegas.

What goes around comes around when it comes to hit songs' borrowed lyrics.

'21,' 22: The two longest-leading albums by women in the Billboard 200's 56-year history share space in the top 10 this week.

Adele's "21" logs a 22nd week on top, having passed Whitney Houston's soundtrack to "The Bodyguard," which bounds 38-6 as the chart's Greatest Gainer following her passing on Feb. 11. "The Bodyguard" spent 20 weeks at No. 1 in 1992-93.

Despite having ceded history to "21," "The Bodyguard" returns to the top of a Billboard chart for the first time in 19 years. The set rises 2-1 on Soundtracks.

On the Hot 100, Adele's "Rolling in the Deep" falls to No. 20 after soaring 17-5 last week following her six Grammy Award wins on Feb . 12, including record and song of the year. The good news: now in its 60th week on the survey, "Deep" ties Los Del Rio's "Macarena" for the longest chart stay for a No. 1 hit.

"Macarena" racked its 60 weeks in two chart runs, however, in 1995-96, having returned (to spend 14 weeks at No. 1) as remixed by the Bayside Boys.

GOOD 'LUVIN' ': Madonna scores her record-extending 55th top 10 on Dance/Club Play Songs, as "Give Me All Your Luvin'," featuring Nicki Minaj and M.I.A., vaults 24-9. The song is her 26th top 10 in a row stretching to 1998.

Dating to the chart's origin as a weekly survey the week of Aug. 28, 1976 (when the Bee Gees' "You Should Be Dancing" fittingly led the inaugural list), Janet Jackson ranks second with 34 top 10s, followed by Donna Summer (29).

In just its second chart week, "Luvin' " marks the chart's fastest top 10 since the Queen of Pop's own "Nothing Really Matters" rocketed 21-9 the week of Feb. 20, 1999.

CHART CHIEFS: Traditional Irish folk band the Chieftains enjoy their best showing on the Billboard 200, as their new collaborative album "Voice of Ages" bows at No. 17. The group previously ranked as high as No. 22 with 1995's "The Long Black Veil."

The Chieftains, which formed in Dublin in 1962, first appeared on the Feb. 28, 1976, Billboard 200 with "The Chieftains 5" (which managed a No. 187 peak).

Among the high-profile guests on "Voice" include Bon Iver, the Civil Wars and the Decemberists.

Producer T Bone Burnett "knew exactly who suited us," Chieftains founder Paddy Moloney told Billboard of the set's all-star lineup in the Feb. 25 issue. "All of these people were just spot on."

SECOND TO NONE: Female comedy duo Garfunkel and Oates celebrate top billing on Comedy Albums, as the wry "Slippery When Moist" arrives at No. 1.

The pair, whose name pokes fun at the oft-overshadowed Art Garfunkel (by Paul Simon) and John Oates (Daryl Hall), consists of Kate Micucci and Riki Lindhomme. Micucci stars in Fox's "Raising Hope" (and previously appeared on the sitcom "Scrubs"), often singing and playing ukulele.

The twosome's new set includes such songs as "I Would Never (Have Sex With You)," "My Apartment's Very Clean Without You" and "Google." "Everybody Googles each other," the duo sings. "Everybody does their Facebook research. It's how we get to know one another."

"Save the Rich," meanwhile, sympathizes with the 1%. (* Video conatins language that might not be appropriate for all audiences).

"Those who don't create jobs really need help, too," the pair reasons. "'Cause without their seventh home, how will they make it through?"