Week Ending May 20, 2012. Songs: J.Lo’s Song Sputters

This isn't what Jennifer Lopez wants to hear as she comes down from the high of the two-hour season finale of American Idol (and as she weighs the decision of whether to re-sign for a third season with the hit show), but her current single seems to be running out of gas on the Hot 100. "Dance Again," featuring Pitbull, drops from #17 to #19 in its seventh week. Singles often move up and down, but since J.Lo's twice-weekly Idol visibility is coming to an end, at least for this season, it's starting to look like #17 will be this record's peak.

By contrast, "On The Floor," J.Lo's 2011 collaboration with Pitbull, logged 15 weeks in the top 10, peaking at #3. I don't think "Dance Again" is as striking as "On The Floor." As Randy Jackson might say, "This one was just OK for me."

Pitbull's own smash "Back In Time" sprints over "Dance Again" on the Hot 100, jumping from #21 to #16 in its seventh week.

"Dance Again" is doing better in digital sales than in radio airplay. The song has been listed in the top 10 on Hot Digital Songs for the past two weeks. It dips from #9 to #10 this week, though its sales actually increase slightly, from 103K to 107K.

J.Lo, as ever, is moving on. On the Idol finale, she performed two new songs, "Goin' In" (featuring Flo Rida) and "Follow The Leader," a collabo with the Puerto Rican duo Wisin & Yandel. "Goin' In" is the first release from the forthcoming movie Step Up Revolution, which is due July 27. (It's the fourth movie in the Step Up franchise.)

Nine Donna Summer songs enter Hot Digital Songs in the wake of her death last week. The Oscar-winning "Last Dance" leads the way, with sales of 38K, almost all of which transpired between her death on Thursday and the close of the tracking week on Sunday.

Here are the others that rank among this week's top 200 digital hits (and their sales for the week): "On The Radio" (19K), "Hot Stuff" (16K), "She Works Hard For The Money" (16K), "Bad Girls" (13K), "Love To Love You Baby" (12K), "MacArthur Park" (11K), "Dim All The Lights" (11K) and "Heaven Knows" (10K).

It stands to reason that "Last Dance" made the biggest splash in recent days of any of Summer's hits. It was Summer's signature song. It brought Summer the first of her five Grammys and allowed her to sing on the Oscar stage. "Heaven Knows" was also very special in her career. The 1979 hit featured the trio Brooklyn Dreams, which included Bruce Sudano, to whom Summer was married from 1980 until her death.

Summer's 1977 techno smash "I Feel Love" sold 9K this week, not quite enough to qualify for the 200-deep Hot Digital Songs list. (The minimum number needed this week was a shade over 10K).

Now, let's dish: Summer's biggest hits "back in the day" that didn't sell enough digital copies this week to show up on Hot Digital Songs or Hot R&B/Hip-Hop Digital Songs charts are "No More Tears (Enough Is Enough) with Barbra Streisand, "The Wanderer," "Love Is In Control (Finger On The Trigger)" and "This Time I Know It's For Real." I guess these four songs are, by definition, the B hits.

"Somebody That I Used To Know" by Gotye featuring Kimbra holds at #1 for the sixth week. This equals the run of the hit that immediately preceded it at #1: "We Are Young" by fun. featuring Janelle Monae. This is the first time in nearly two years that back-to-back #1 hits have each had six or more weeks on top. This last happened in the summer of 2010 with "California Gurls" by Katy Perry featuring Snoop Dogg (six weeks) and "Love The Way You Lie" by Eminem featuring Rihanna (seven weeks).

Carly Rae Jepsen's

"Call Me Maybe" jumps from #4 to #2 in its 13th week on the chart. It stands a very good chance of hitting #1. It jumps to #1 this week on Hot Digital Songs. (You know a song is smash when a quickie knock-off version makes the digital sales chart. A version of "Call Me Maybe" by an act called Here's My Number sold 14K copies this week, down from 18K last week. Which begs the question: Were those buyers confused and thought they were buying Jepsen's version? Are they budding Jepsen "completeists"? Or were they just curious to hear how it might differ from Jepsen's hit?

Nicki Minaj's

"Starships" jumps from #6 to #5 in its 14th week on the chart. This equals its highest ranking to date. The song was featured last week on Glee, which probably helped a little, though the song was already a smash hit. It has been in the top 10 for its entire 14-week run. One more week in the top 10 (which is pretty much a foregone conclusion) and it ties the mark set by Minaj's 2011 smash "Super Bass." (The Glee version of "Starships" sold 18K copies this week.)

Here's the low-down on this week's top 10 songs.

The Top Five: "Somebody That I Used To Know" by Gotye featuring Kimbra holds at #1 for the sixth week in its 20th week on the chart. This is its 12th week in the top 10. Digital sales rank: #2 (289K)… Carly Rae Jepsen's "Call Me Maybe" jumps from #4 to #2 in its 13th week on the chart. This is its eighth week in the top 10. Digital sales rank: #1 (293K)… "Payphone" by Maroon 5 featuring Wiz Khalifa dips from #2 to #3 in its fifth week on the chart. It has been in the top three the entire time. Digital sales rank: #3 (282K)… "We Are Young" by fun. featuring Janelle Monae dips from #3 to #4 in its 22nd week on the chart. This is the 15th week in the top 10 for the former #1 song. Digital sales rank: #5 (162K)… Nicki Minaj's "Starships" inches up from #6 to #5 in its 14th week on the chart. This equals its highest ranking to date. It has been in the top 10 the entire time. Digital sales rank: #4 (174K).

The Second Five: "Wild Ones" by Flo Rida featuring Sia dips from #5 to #6 in its 20th week on the chart. This is its 10th week in the top 10. Digital sales rank: #6 (152K)…One Direction's "What Makes You Beautiful" holds at #7 for the second week in its 14th week on the chart. This is its eighth week in the top 10. Digital sales rank: #8 (141K)…The Wanted's "Glad You Came" holds at #8 for the second week in its 19th week on the chart. This is its 13th week in the top 10. Digital sales rank: #12 (93K) … Justin Bieber's "Boyfriend" holds at #9 for the second week in its eighth week on the chart. It has been in the top 10 the entire time. Digital sales rank: #7 (144K)…Train's "Drive By" holds at #10 for the second week in its 19th week on the chart. Digital sales rank: #9 (109K).

The title of Calvin Harris' current hit, "Feels So Close," is very appropriate. The song has hovered between #11 and #15 for nine straight weeks without ever squeaking into the top 10. (This week is its fourth non-consecutive week at #12.) It really must feel "so close."

Three records are streaking toward the top 10. I already told you about Pitbull's "Back In Time," which jumps from 21 to #16 in its seventh week. Rihanna's "Where Have You Been" jumps from #18 to #13 in its fifth week. (Expect a big jump next week following Rihanna's performance of the song on the Idol finale.) Usher's "Scream" leaps from #25 to #15 in its fourth week.

(Usher's other hit, "Climax," drops from #22 to #27 in its 13th week. But it holds at #1 on Hot R&B/Hip-Hop Songs for the sixth straight week. It's Usher's longest-running #1 R&B hit since "Yeah!" (featuring Lil Jon & Ludacris) topped the chart for eight weeks in 2004.)

Ellie Goulding's "Lights" jumps from #26 to #22 in its 22nd week…Jason Mraz's "I Won't Give Up" jumps from #34 to #29 in its 20th week. The song has already climbed as high as #8. The song was featured on Glee last week… "Titanium" by David Guetta featuring Sia jumps from #46 to #30 in its sixth week...Kip Moore's "Somethin' 'Bout A Truck" jumps from #35 to #31 in its 15th week. The song jumps to #1 on Hot Country Songs this week. It's Moore's first #1 country hit.

Ca$hOut's "Cashin Out" jumps from #52 to #41 in its sixth week…Neon Trees' "Everybody Talks" jumps from #57 to #42 in its 10th week…Demi Lovato's "Give Your Heart A Break" jumps from #53 to #43 in its seventh week…Alex Clare's "Too Close" jumps from #63 to #48 in its eighth week.

Kenny Chesney's

"Come Over" is this week's top new entry at #59. It's the second single from Chesney's upcoming album Welcome To The Fishbowl (which is due June 19). It follows "Feel Like A Rock Star," a collabo with Tim McGraw, which is #11 on this week's country chart. It drops from #65 to #83 on this week's Hot 100, after peaking at #40 last month.

Three songs are getting their second wind on the chart. "Right By My Side" by Nicki Minaj featuring Chris Brown jumps from #78 to #60 in its seventh week. The song has already climbed as high as #51…Trey Songz's "Heart Attack" jumps from #80 to #69 in its seventh week. The song has climbed as high as #65…"Take It To The Head" by DJ Khaled featuring Chris Brown, Rick Ross, Nicki Minaj and Lil Wayne jumps from #84 to #71 in its seventh week. The song has climbed as high as #63.

Dierks Bentley's "5-1-5-0" jumps from #94 to #73 in its second week. The song is already in the top 20 on Hot Country Songs.

Grouplove's

"Tongue Tied" re-enters the chart at #74. The song has already climbed as high as #69. The song (from the group's album Never Trust A Happy Song) has been featured in an IPod Touch commercial. It was also featured on Glee last week. The Glee Cast's version sold 22K copies this week…One Direction's "One Thing" jumps from #89 to #76 in its eighth week…Josh Turner's "Time Is Love" jumps from #90 to #79 in its eighth week.

The Band Perry's "Postcard From Paris" re-enters at #87, a new high…."Let's Go" by Calvin Harris featuring Ne-Yo re-enters at #89, matching its original peak from three weeks ago…"Nobody's Perfect" by J. Cole featuring Missy Elliott bows at #90. It's from his former #1 album Cole World: The Sideline Story…"The Fighter" by Gym Class Heroes featuring Ryan Tedder bows at #95.

On Feb. 20, 2005, the Black Eyed Peas' "Let's Get It Started" became the first song in digital history to sell 500K copies. This week, this digital ground-breaker becomes the 138th song to sell 3 million copies. "Let's Get It Started," which was a Grammy finalist for Record of the Year for 2004, is the Peas' sixth song to top 3 million. Here are the others: "I Gotta Feeling" (7,950,000), "Boom Boom Pow" (6,407,000), "Imma Be" (3,706,000), "Time (Dirty Bit)" (3,283,000) and "Just Can't Get Enough (3,086,000). The Peas and Lady Gaga are the only acts with two of the top 10 digital sellers of all time.

Shameless Plug: Tomorrow is the official launch of summer, at least at Yahoo! Music. To celebrate, we'll have a lot of summer-themed blogs. My contribution is a Chart Watch Extra in which I tell you the biggest #1 hit of summers past, from 2011 working backwards to 1955. These are the songs that you heard over and over at the beach or on vacation or on that endless ride to Grandma's house. The image here is a tip-off to the biggest song of the summer of 1966, the Lovin' Spoonful's immortal "Summer In The City." Check it out tomorrow.