LMFAO spends its fourth week atop the Billboard Hot 100, to be released tomorrow (July 28) on Billboard.com, with "Party Rock Anthem," featuring Lauren Bennett and GoonRock, while high-profile rap duo Bad Meets Evil charges into the top 10 with "Lighters."
 
"Party" tallies a fourth week at No. 1 on Digital Songs, although it declines by 3% to 209,000 downloads sold, according to Nielsen SoundScan. On Radio Songs, the track lifts 3-2 with a 5% gain to 143 million in all-format audience, according to Nielsen BDS.

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Bad Meets Evil - the hip-hop duo of Eminem and Royce da 5'9" - bookends the Hot 100's top 10 by igniting 17-10 with Digital Gainer honors (and besting its No. 16 peak upon its debut five weeks ago). The cut soars 12-5 on Digital Songs, up 56% to 143,000, marking its best sales week to-date. Airplay continues to build for the song, which rockets 35-20 on Radio Songs (47 million, up 35%).
 
"Lighters" (which also marks featured artist Bruno Mars' sixth Hot 100 top 10) is Eminem's second top 10 this year. He and Skylar Grey guested on Dr. Dre's "I Need a Doctor," which reached No. 4 in March. Eminem has now notched top 10s under three billings, in fact; he sang on D12's No. 6-peaking "My Band" in 2004. (The superstar has logged 14 top 10s as a soloist).

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Katy Perry inches closer to a historical Hot 100 No. 1, as "Last Friday Night (T.G.I.F.)" rises 3-2 with Airplay Gainer honors for the fourth time in five weeks. On Radio Songs, "Friday" lifts 4-3 (129 million, up 12%). The track rebounds 3-2 on Digital Songs, although with a 4% decline to 164,000.
 
As previously reported, should "Friday" reach the Hot 100 summit, Perry would collect a fifth No. 1 from her album "Teenage Dream," following "California Gurls," featuring Snoop Dogg, the title cut, "Firework" and "E.T.," featuring Kanye West. In the Hot 100's 53-year history, only Michael Jackson's "Bad" (1987-88) has generated five No. 1 singles.

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Pitbull's former Hot 100 No. 1 "Give Me Everything," featuring Ne-Yo, Afrojack and Nayer, dips 2-3. The song spends a third week atop Radio Songs (152 million, down 2%) and slides 6-7 on Digital Songs (127,000, down 7%).
 
Nicki Minaj's "Super Bass" rises 5-4 on the Hot 100. The song holds at No. 5 on Radio Songs with a 9% gain to 118 million and ascends 4-3 on Digital Songs, despite a 1% downturn to 154,000.
 
Adele's former seven-week Hot 100 No. 1 "Rolling in the Deep" slips 4-5, while Lil Wayne holds at No. 6 with "How to Love," which gains in digital sales (139,000, up 2%) and radio airplay (97 million, up 14%). "Love" is the sole new entry on Billboard's 10-position-deep Summer Songs 2011 running tally, entering at No. 9. "Rolling in the Deep" continues to lead the seasonal list (which tracks the most popular songs this summer based on cumulative performance on the Hot 100 from the chart dated June 11 through this week; the final ranking will be posted Sept. 8).

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Hot Chelle Rae's "Tonight Tonight" rises 9-7 on the Hot 100 with gains in download sales (148,000, up 13%) and at radio (58 million, up 14%).
 
Lady Gaga's "The Edge of Glory" descends 7-8 on the Hot 100 and OneRepublic's "Good Life" slips 8-9.
 
Below the Hot 100's top 10, Red Hot Chili Peppers score the highest of the chart's seven debuts, as "The Adventures of Rain Dance Maggie" bows at No. 38. The song starts on Digital Songs at No. 26 with 57,000 downloads sold and enters Radio Songs at No. 74 with 15 million in audience. Fueling its rise at radio is the song's 23-1 blast on Rock Songs. The track concurrently climbs 24-3 on Alternative Songs, 32-7 on Mainstream Rock and enters Triple A at No. 8 with Greatest Gainer honors on all three rock radio-based rankings.
 
"Adventures" previews Red Hot Chili Peppers' 10th studio album, "I'm With You," due Aug. 30. The track marks the band's 13th Hot 100 hit and first since the No. 22-peaking "Snow (Hey Baby)" in 2007. The venerable group first graced the chart with the eventual No. 73-peaking "Give It Away" in 1991.
 
The Hot 100's only other top 50 debut belongs to Jay-Z and Kanye West's "Otis," featuring the artist to whom the rappers pay tribute, Otis Redding, as it samples Redding's No. 25-peaking 1967 Hot 100 hit "Try a Little Tenderness.
" Redding, who died in 1967, had not appeared on the Hot 100 since 1969. The song previews Jay-Z and West's album "Watch the Throne," due Aug. 8. "Otis" begins on Digital Songs at No. 40 (44,000) and Radio Songs at No. 50 (22 million in first-week all-format audience on 131 stations).

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All charts, including the Hot 100, Digital Songs, Radio Songs and the Summer Songs 2011 survey, will be refreshed tomorrow on Billboard.com.