Chart Moves:  2012's Twelve Hot 100 No. 1s; Taylor Swift Back in Country Airplay Top 10; Dropkick Murphys Xmas Song Charts
Chart Moves: 2012's Twelve Hot 100 No. 1s; Taylor Swift Back in Country Airplay Top 10; Dropkick Murphys Xmas Song Charts

As previously reported, Bruno Mars spends a third week at No. 1 on the Billboard Hot 100 with "Locked Out of Heaven." The song becomes the first to top the Hot 100, Hot 100 Airplay, Hot Digital Songs and On-Demand Songs simultaneously dating to the lattermost survey's March 24 inception. Who else makes headlines on the Hot 100 and other singles charts?

-- Carly Rae Jepsen, Maroon 5, Gotye, fun.: With this week's charts (dated Jan. 5, 2013) marking the last released in 2012, let's look at the reigns of the, fittingly, 12 songs to ascend to No. 1 on the Hot 100 this year:

Weeks at No. 1, Title, Artist
9, "Call Me Maybe," Carly Rae Jepsen
9, "One More Night," Maroon 5
8, "Somebody That I Used to Know," Gotye featuring Kimbra
6, "We Are Young," fun. featuring Janelle Monae
3, "Locked Out of Heaven," Bruno Mars
3, "Diamonds," Rihanna
3, "We Are Never Ever Getting Back Together," Taylor Swift
3, "Stronger (What Doesn't Kill You)," Kelly Clarkson
2, "Whistle," Flo Rida
2, "Set Fire to the Rain," Adele
2, "Sexy and I Know It," LMFAO
1, "Part of Me," Katy Perry

Clearly, commanding the Hot 100 for a lengthy stretch aids a song's ranking on the year-end Hot 100. Gotye's "Somebody" places at No. 1 for 2012, followed by Jepsen's "Maybe" (No. 2) and fun.'s "Young" (No. 3). (Maroon 5's "Night" ranks at No. 18; released in mid-year, it didn't log enough total chart weeks to place higher on the year-end tally.). Those three songs spent a total of 26 weeks - or half the year - atop 2012's Hot 100 survey.

The sum of 12 No. 1s this year marks the fewest since 2009, when 12 titles also ruled. In 2010, 16 songs reached No. 1 on the Hot 100, followed by 13 last year. The addition of On-Demand Songs data to the Hot 100 in March may have contributed to this year's lower figure; as Mars' "Heaven" shows, a song that can top all three of the chart's component surveys simultaneously stands an even better chance to maintain its Hot 100 reign than when only airplay and sales infused the bulk of data that decided Hot 100 rankings.

-- Taylor Swift: Her "Begin Again," the second country radio single from her album "Red," pushes 12-10 on Country Airplay, bringing her back to the chart's top 10 after the pop-leaning "We Are Never Ever Getting Back Together" stopped at No. 13. "Begin" is Swift's 16th Country Airplay top 10, with only "Never" missing the top tier among her singles (excluding holiday fare) promoted to country radio dating to her debut hit "Tim McGraw," which reached No. 6 in 2007. (She's scored six No. 1s on the chart.)

Swift's streak of 15 career-opening Country Airplay top 10s is second among women. Carrie Underwood has sent her first 16 country singles to the top 10 (with 13 reaching No. 1). She could extend her mark to 17 with current release "Two Black Cadillacs"; the track bullets at No. 18 in its seventh frame.

-- Rod Stewart: His "Let It Snow, Let It Snow, Let It Snow" leads Adult Contemporary for a fifth week, tying it for the longest-leading holiday title in the chart's 51-year history. Last holiday season, Michael Buble's ballad cover of Mariah Carey's "All I Want for Christmas Is You" reigned for five frames, as did Josh Groban's "Believe" in 2004-05.

-- Dropkick Murphys, fun.:
Holiday hits aren't confined solely to AC. Dropkick Murphys' "The Season's Upon Us" enters Hot Rock Songs at No. 23. It's also the group's first appearance on Alternative, where it rises 33-28. While it's rare for a holiday song to chart at the format, it's not the first: Adam Sandler's "The Chanukah Song," for instance, debuted in January 1996 and reached No. 25.

Fun., meanwhile, adds holiday cheer, as its version of "Sleigh Ride" dashes onto Hot Rock Songs at No. 48.