Usher helped popularize Justin Bieber ... who helped Carly Rae Jepsen reach No. 1. A star's endorsement can work wonders.
'PARTY ROCK' ON: LMFAO 's "Party Rock Anthem," featuring Lauren Bennett and GoonRock, holds at No. 45 in its 65th week on the Hot 100. The song matches Adele's "Rolling in the Deep" (2011-12) for the longest residence by a former No. 1 in the Hot 100's 54-year history.
Among all songs, only Jason Mraz 's No. 6-peaking "I'm Yours" (76 weeks, 2008-09) and LeAnn Rimes ' No. 2 hit "How Do I Live" (69 weeks, 1997-98) have spent more time on the tally. (Jewel's "You Were Meant for Me"/"Foolish Games," which reached No. 2, also spent 65 weeks on the chart.)
As LMFAO's "Sexy and I Know it" spends a 42nd week on the Hot 100 (46-50), the 107 total chart weeks between "Party" and "Sexy" are the most by an act courtesy of two simultaneously-charting songs in the list's archives. Adele is the only other act to total at least 100 chart weeks via two singles on the Hot 100 in the same week. The week of April 14, "Someone Like You" (No. 48 in its 39th week) and "Rolling" (No. 49 in its 65th frame) combined for 104 total weeks on the Hot 100. "Party," "Sexy," "Someone" and "Rolling" all reached No. 1 on the Hot 100.
'TIED' UP: Grouplove  completes the fifth-longest climb to the Alternative Songs chart's top spot, as "Tongue Tied" rises 2-1 in its 28th week. Neon Trees' "Animal" holds the mark with a 32-week odyssey to No. 1 in 2010.
"Tongue Tied," which has sold 482,000 downloads, according to Nielsen SoundScan, and been covered by the cast of Fox's "Glee,"  continues its ascent on the Hot 100, where it rises 64-60 in its eighth week.
'HEY,' HEY, THEY'RE THE LUMINEERS: As Denver-based trio the Lumineers  leap to No. 1 on the adult alternative Triple A airplay chart with "Ho Hey," the tally welcomes its fourth consecutive leader by an act in its first chart visit. Previously, Alabama Shakes led with "Hold On," following commands by Of Monsters and Men ("Little Talks") and Gotye  ("Somebody That I Used to Know," featuring Kimbra).
Never before in the Triple A chart's 16-year history had four introductory format singles ruled consecutively.
WORDS CAN'T DESCRIBE: Folk music is known for its storytelling, but there's not even a word in the title atop this week's Folk Albums chart, as Ed Sheeran 's "+" debuts at No. 1. The set features the British singer/songwriter's breakout single, "The A Team," which rises 9-7 on Triple A, bullets at No. 23 on Adult Pop Songs and enters Heatseekers Songs at No. 24.
"+" isn't the first symbol to grace a Billboard chart summit. The artist formerly and again currently known as Prince  led multiple rankings in the '90s while temporarily using his personalized symbol as his moniker.