After debuting at No. 1 last week with "Empty," YG Entertainment's new boy band WINNER have been dethroned by Jang Bum Joon. The former Busker Busker guitarist and vocalist slides in at No. 1 with "Difficult Woman," pushing WINNER to second place.

Newbie Park Boram is showing a lot of longevity with her first single "Beautiful," which is down just one spot to No. 3, while SHINee's Taemin makes a solid solo debut with "Danger" at No. 5.

Veteran girl group KARA, who recently lost two members and gained a new one, arrive at No. 17 with their new single "Mamma Mia." This is weak compared to the group's usual chart ranking, but when you take into consideration that they just reshuffled their lineup, as well as the fact that "Mamma Mia" seems to be holding up on the various real-time digital charts, a top twenty debut really isn't too shabby at all.

A few spots lower is Orange Caramel's "My Copycat," which enters at No. 22. This is the trio's lowest-charting single ever, but lately the K-pop charts have been more about longevity than one-week peaks, so we'll see how this does in the long run.

Speaking of girl groups with low charting singles, SECRET's "I'm In Love" plummets to No. 29 after debuting at No. 14 last week, while poor Sunny Hill just flopped beyond belief with "Monday Blues" at No. 96.

However, even Sunny Hill can't match STELLAR in flopping, with the controversial girl group's new single "Mask" missing the top 100 altogether. STELLAR were never big on the charts to begin with, but they did score a surprise top forty hit earlier this year with the amazing "Marionette," so it's sad to see that the equally-as-good "Mask" has failed to continue their winning streak.

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

No. 1. Jang Bum Joon - Difficult Woman

No. 5. Taemin - Danger

No. 17. KARA - Mamma Mia

No. 22. Orange Caramel - My Copycat

No. 96. Sunny Hill - Monday Blues

No. ???. STELLAR - Mask

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

Frozen fever is in full effect, and absolutely nobody is safe -- not even the K-pop world. The signature song from the Disney blockbuster, "Let It Go," performed by Idina Menzel, enters South Korea's official singles chart at No. 1 this week, while a second version of the song rises to No. 4. Additionally, the Demi Lovato version is also charting at No. 54.

Apparently, this is the first time in the history of the Gaon chart that a foreign, English-language song has topped the charts. The vast majority of all the music that charts in Korea is Korean, so it's rare for foreign songs to even crack the top 100, let alone reach No. 1, so this is a HUGE achievement for Frozen.

Last week's No. 1 single, Hyorin's "Hello," falls one spot to No. 2, while Ga-In's comeback track, "Fxxk U," enters at No. 3. This makes "Fxxk U" Ga-In's fifth top three single as a lead artist, further solidifying her status as one of K-pop's top female soloists.

Girl's Day's "Something" holds strong at No. 6, while Rain's sleeper hit, "La Song," rises one spot to No. 8. Both songs have shown a lot of longevity, which can also be said for AOA's "Miniskirt," which climbs one spot this week for a new peak of No. 11.

SPICA's "You Don't Love Me" debuts at No. 16 to become the second highest-charting song of their career so far ("Tonight" reached at No. 10 last year), while TVXQ's sassy "Something" slips to No. 17.

Sunny Hill's "Don't Say Anything" manages to rise ten spots to No. 24, but the increase isn't enough to save it from being the group's lowest-charting single since relaunching in 2011 with "Midnight Circus."

Both Rainbow Blaxx and Dal Shabet fall five spots each this week: "Cha Cha" is down to No. 25, while Dal's "B.B.B." slips to No. 32.

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

No. 1. Idina Menzel - Let It Go

No. 3. Ga-In - Fxxk U

No. 11. AOA - Miniskirt

No. 16. SPICA - You Don't love Me

No. 24. Sunny Hill - Don't Say Anything

K-pop fans have been hyped for months about the solo debut of SISTAR's Hyorin. SISTAR's currently the second most popular girl group in K-pop (after Girls' Generation, obviously), and they already have two of the highest-selling singles of the year with "Gone Not Around Any Longer" and "Give It To Me" -- so Hyorin flying solo is basically the Korean equivalent of Beyonce dropping "Crazy In Love."

Hyorin's doing a double A-side release for her solo debut, starting with a gorgeous mid-tempo ballad called "Lonely." The only thing is, we've heard this song before -- twice! The composition strongly resembles Sunny Hill's hit single "Pray," which was later recycled by Brown Eyed Girls for their Sixth Sense album cut, "An Inconvenient Truth."

"Lonely" was written by Kim Do Hoon, who does a lot of work with Sunny Hill's label, LOEN Entertainment. LOEN also has a good relationship with Nega Network, home of Brown Eyed Girls, and they often share the same producers, songwriters, and music video directors. Not only that, but LOEN is currently in the process of buying SISTAR's label, Starship Entertainment. This whole situation isn't much different to when Ga-In signed to LOEN and released "Bloom," which sounded a lot like the songs from LOEN's star artist, IU.

We're not shading Hyorin, though. "Pray" is amazing, "An Inconvenient Truth" is amazing, and "Lonely" is amazing. There's nothing wrong with using the same formula if the end product is good. Just look at Ke$ha's "TiK ToK" and Katy Perry's "California Gurls" -- they both sound the same, and we played the hell outta both those songs back when they dropped.

Hyorin, girl, keep giving us these flawless songs --original or not-- and we'll keep listening!

It's taken them more than two years, but Girl's Day has finally cracked the top five again. The group's latest single, "Female President," debuts at No. 5 on this week's GAON chart, matching the peak position of their 2011 hit, "Twinkle Twinkle." With "Female President," Girl's Day's been able to out-peak "Expectation," which reached No. 9 back in March.

Last week's No. 1, SISTAR's "Give It To Me," trades places with Lee Seung Chul's "My Love," falling to No. 3. Meanwhile, Roy Kim's "Love Love Love" enters at No. 2, and Lim Kim's "All Right" falls to No. 4.

Verbal Jint's "Walking In The Rain" enters at No. 6, while SISTAR's album cut, "The Way You Make Me Melt," slips to No. 8. Sunny Hill's "Darling of All Hearts" follows No. 9 to become the group's fourth consecutive top ten single.

After spending one week in the top ten, After School's "First Love" falls to No. 13, followed closely by Dal Shabet's "Be Ambitious," which jumps ten places to No. 14. "Be Ambitious" is Dal Shabet's highest-charting song since last year's "Hit U," finally putting an end to the downward chart spiral the group's been on since Viki left. Now that they've at least stopped the bleeding, hopefully the group will be able to use this as a launchpad for a big breakout hit just like Girl's Day did with "Expectation" after "Don't Forget Me."

Debuting at No. 20 this week is 4minute's latest, "Is It Poppin'?" Normally we'd predict a huge second-week jump from the group, but "Is It Poppin'?" has already lost a lot of steam on the digital charts since its release. It initially looked set to repeat the success of "What's Your Name?," but now there's no chance. At best, it'll make the top ten.

B.A.P's new promo single, "Coffee Shop," enters at a disappointing No. 35, and the chance of it jumping higher next week is slim since the song has now fallen out of the top fifty of Melon's real-time chart. We were expecting higher from the boys since their last buzz single, "Rain Sound," was able to reach No. 15.

Last but not least is Crayon Pop, whose new single, "Bar Bar (+Bar)," jumps 53 spots to No. 90. To our knowledge, it's the rookie girl group's first top 100 entry, so even though it's not exactly a huge hit, it's progress.

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

No. 2. Roy Kim - Love Love Love

No. 5. Girl's Day - Female President

No. 14. Dal Shabet - Be Ambitious

No. 35. B.A.P - Coffee Shop

No. 90. Crayon Pop - Bar Bar (+Bar)

SISTAR spends another week at No. 1 with their latest hit, "Give It To Me," while two other tracks from their new album spend a second week in the top ten: "The Way You Make Me Melt" falls 2-5, and "Bad Boy" slips 4-10. All three songs are still ranking high on digital charts, so expect them to stick around for a while longer.

Lim Kim, from Superstar K3 finalist group, Two Months, debuts at No. 2 with her debut solo single, "All Right." The sexy indie-pop songstress recently made headlines across Korea for wearing panties in a music video teaser clip, so it's no surprise to see her doing so well on the charts.

Veteran rock singer, Lee Seung-chul, debuts at No. 3 with "My Love," followed by B2ST, whose latest buzz single, "I'm Sorry," arrives at No. 4.

As we predicted, After School crack the top ten this week with "First Love," which moves 12-7. However, Ivy's "I Dance" hasn't budged since last week, remaining at No. 13.

K-pop Star finalist, Baek A-yeon, debuts at No. 12 with "A Good Boy," while Sunny Hill's new folk single, "Darling of All Hearts," enters at No. 16.

Dal Shabet's "Be Ambitious" arrives at No. 24, but there's a chance it could climb higher next week. The group's been receiving a lot of publicity for their suggestive leg dance choreography and "Be Ambitious" has been performing decently on the digital charts, so things are looking relatively good for them so far.

Last but not least is rookie girl group, Crayon Pop, whose new single, "Bar Bar (+Bar)," debuts at No. 143 -- which actually isn't THAT bad by their standards. The group made headlines earlier this week with a small scandal that saw them outed as members of a controversial online forum, and they seem to have kicked up their music promotions to cash in on the publicity, so hopefully "Bar Bar (+Bar)" makes a jump on next week's chart.

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

No. 1. SISTAR - Give It To Me

No. 2. Lim Kim - All Right

No. 7. After School - First Love

No. 12. Baek A-yeon - A Good Boy

No. 16. Sunny Hill - Darling of all Hearts

No. 24. Dal Shabet - Be Ambitious

No. 143. Crayon Pop - Bar Bar (+Bar)