SISTAR have hung onto the No. 1 spot for a second week with their latest single, "Touch Your Body." The song is still sitting comfortably at No. 1 on the Melon digital music chart, too, so we could potentially see the quartet spend a third week at the top of the Gaon chart. If that happens, then "Touch My Body" will become the longest-running No. 1 in almost two years.

Overall, "Touch My Body" is SISTAR's fifth No. 1 as a full group, and their 11th if you include their subunit, solos, and collaborations. It's this kind of success that's helped them become Korea's second biggest girl group -- after Girls' Generation, of course.

In second place is Block B's "Her," which climbs one spot to No. 2 this week. It's the highest-charting song of Block B's career, and its success is pretty impressive by boy band standards. Male artists generally tend to fare better with physical album sales, while the digital market is dominated by girl groups and OST ballads.

HyunA's racy "Red" debuts at a solid No. 3, matching the position of her signature hit, "Bubble Pop!," but failing to reach the No. 1 and No. 2 peak of both "Ice Cream" and "Change."

INFINITE's flawless "Back" slips two spots to No. 4, followed by Girl's Day's "Darling" at No. 5.

JYJ's new single "Back Seat" debuts at No. 6, while all the songs from their latest album, Just Us, are scattered throughout the rest of the top 100.

Further down, Wonder Girls' Yenny, who now goes by the bizarre and confusing name of HA:TFELT, enters at a respectable No. 16 with her first solo single, "Ain't Nobody." The position pales in comparison to her ex-bandmate Sunmi, but is relatively decent by solo female standards, putting her on par with T-ara's Jiyeon and Hyomin.

The new HIGH4 single with Lim Kim, "A Little Close," enters at No. 29, while Sunny Hill's "Once In Summer" arrives at No. 47 to become their lowest-charting single ever.

Speaking of flops, BESTie's "Hot Baby" debuts at a disappointing No. 53. Although this matches "Thank U Very Much" as their highest-charting single, it's still a let down for the group, who should be doing much better at this point.

Check out this week's key K-pop hits, below.

No. 1. SISTAR - Touch My Body

No. 3. HyunA - Red

No. 4. INFINITE - Back

No. 6. JYJ - Back Seat

No. 16. HA:TFELT - Ain't Nobody

No. 53. BESTie - Hot Baby

EXO came this close to scoring their first No. 1 single this week with "Miracles In December," but were pipped at the post by Seo In Guk and Zia's new duet, "Loved You," which takes the top spot. EXO settle for second place, matching the peak position of their hit single, "Growl."

Wheesung & Gummy's "Special Love" reaches No. 3 this week, followed by Lim Kim's Reply 1994 OST cut, "Happy Me," at No. 4. Last week's chart-topper, Hyorin's "One Way Love," rounds out the top five at No. 5.

2NE1 continue to show a lot of longevity with their new single, "I Miss You," which slips a few spots to No. 6 this week. The sparse ballad has done so well that it's definitely put a stop to the group's declining popularity. We can only hope that YG Entertainment keeps the momentum going with an album early next year, instead of letting it all go to waste like they did after "I Love You."

Further down, T-ara's "What Should I Do?" debuts at a disappointing No. 19. Unless it rises next week, it'll be the lowest-charting lead single of the group's career -- including T-ara N4's "Countryside Life," which managed to reach No. 11.

A few spots down, Crayon Pop's "Lonely Christmas" rises to No. 23, while Nine Muses' "Glue" enters at a so-so "No. 24."

There seems to be a trend in K-pop this December, with ballads and darker-themed music ruling the charts, while happy and upbeat concepts are flopping. That would explain some of the latest chart positions, like T-ara's "What Should I Do?" tanking right after the success of "No. 9," Crayon Pop and Nine Muses' latest singles failing to match the success of their predecessors, and the current poor digital performance of SECRET's "I Do I Do" (expect that track to make a mediocre debut next week). On the other hand, stuff like miss A's "Hush," 2NE1's "I Miss You," EXO's "Miracles In December," VIXX's "Voodoo Doll," and Hyorin's solo music are all doing very well, not to mention all the random acoustic ballads that are out.

Bad timing can be such a bitch.

Anyway, check out this week's key K-pop hits, below!

No. 1. Seo In Guk & Zia - Loved you

No. 2. EXO - Miracles In December

No. 19. T-ara - What Should I Do?

No. 23. Crayon Pop - Lonely Christmas

No. 24. Nine Muses - Glue

2NE1's popularity ain't what it used to be, but the group's still capable of topping the K-pop charts with ease. Their new single, "Missing You," enters the Gaon chart at No. 1 this week, becoming the tenth chart-topper of their career.

Last week's No. 1, Davichi's "Letter," falls to No. 3, while Lee Juck's "Lies Lies Lies" rises 14 spots to No. 2.

As expected, T.O.P's "Doom Dada" has risen this week, climbing six spots to No. 4, while Taeyang's "RINGA LINGA" is down to No. 14.

San E's new single, "Break Up Dinner," enters at No. 5, pushing miss A's "Hush" down to No. 8.

2AM's new promo single, "Just Stay," debuts at No. 11, followed closely by Lim Kim's latest, "Goodbye 20," at No. 12.

There's really not much else interesting going on in the charts this week, but next week will be better with the debut of Hyorin's solo album.

Check out this week's key K-pop hits, below!

No. 1. 2NE1 - Missing You

No. 5. San E - Break Up Dinner

No. 11. 2AM - Just Stay

No. 12. Lim Kim - Goodbye 20

No. 115. Wa$$up - Nom Nom Nom