Chart Beat: Lady Gaga, Lady Antebellum, Britney Spears

LADY FIRST, PART 1: Lady Gaga becomes just the third artist in the 16-year history of the Mainstream Top 40 airplay chart to collect three No. 1s from a debut album.

"LoveGame" rises 2-1, marking Lady Gaga's third No. 1 following "Just Dance" (two weeks) and "Poker Face" (five weeks). The three songs appear on her top five Billboard 200 album, "The Fame."

The singer-songwriter born Stefani Germanotta joins just two prior artists in accomplishing the triumphant triple play.

In 1993-94, Ace Of Base reigned consecutively with three cuts from its debut set "The Sign": "All That She Wants," the title cut (a chart-record 14 weeks) and "Don't Turn Around."

In 2002-03, Avril Lavigne repeated the feat with a trio of tracks from her debut set "Let Go": "Complicated" (eight weeks), "Sk8er Boi" (one week) and "I'm With You" (four weeks).

"LoveGame" (3-1) is Lady Gaga's second No. 1 on Hot Dance Club Songs, following "Poker Face." "Just Dance" peaked at No. 2 on the list, which became the first Billboard chart to welcome the diva. Her introductory hit bowed on the chart dated May 3, 2008, more than six months before the song entered the Mainstream Top 40 tally.

LADY FIRST, PART 2: There's a leading Lady on Hot Country Songs, too.

Unlike Lady Gaga, a solo female artist, Lady Antebellum is a trio, and this week, the act scores its first No. 1 on the country airplay chart.

The threesome of Dave Haywood, Charles Kelley and Hillary Scott ascends 3-1 with "I Run to You." The group previously peaked at No. 3 with its debut single "Love Don't Live Here" and No. 11 with "Lookin' for a Good Time."

Lady Antebellum is the first group this year to notch its first No. 1 on Hot Country Songs. Zac Brown Band, whose "Whatever It Is" this week dips 2-3, was the last group to celebrate a first No. 1. Its "Chicken Fried" sizzled to the summit on the chart dated Dec. 6, 2008. Among trios, Lady Antebellum's coronation marks the first maiden No. 1 since Rascal Flatts collected its first leader, "These Days," in November 2002.

The 26-week climb to the top for "I Run to You" is the chart's longest since James Otto's "I Just Got Started Lovin' You" stepped 2-1 in its 29th week on the May 17, 2008, list.

'RADAR' DETECTIONS: While Lady Gaga headlines the Mainstream Top 40 chart's highlights, Britney Spears makes a noteworthy move of her own.

"Radar," the fourth single from "Circus" (and originally a track on her previous album, "Blackout") debuts at No. 35, becoming her 21st entry on the list this decade.

The bow lifts Spears into solo possession of most hits on the chart since 2000. She and Nelly had been tied with 20 charted titles apiece in that span.

COMPLETE BEAT: Check back tomorrow when we run down feats from among all our charts, including the Billboard Hot 100, where two superstar divas debut. Hannah Montana (whose alter ego lead the Adult Contemporary chart for a second week) blasts in with "He Could Be the One," while Mariah Carey returns with "Obsessed," her 40th chart entry. With the bow, Carey becomes just the eighth female artist in the Hot 100's history to notch at least 40 charted titles.

Following the emotional July 7 memorial for Michael Jackson, the King of Pop continues to populate - and lead - multiple surveys. Several songs performed at the gathering scale Hot Digital Songs, including "We Are the World," which draws its first ink on a Billboard chart since 1985.