SM Entertainment's f(x) have narrowly missed out on topping the Gaon chart with their new single "Red Light," which is forced to settle for second place this week. The edgy electro-pop track was pipped at the post by A Cube's seasonal summer single, "Break Up To Make Up," performed by balladeer Huh Gak and A Pink's Eunji.

While f(x) missed out on No. 1, they did manage to land two songs in the top ten, with the bhangra-flavoured "Milk" debuting at No. 10.

Last week's chart topper, Younha's "Umbrella," slips to No. 4, while god's new single, "The Story of Our Lives," debuts at No. 3.

AOA's "Short Hair" drops four spots to No. 11, while B2ST's surprisingly successful "Good Luck" is down to No. 14, and Davichi's "Don't Move" stays put at No. 20.

Rookie girl group MAMAMOO slip to No. 25 with "Mr. Ambiguous" after peaking at No. 19 last week, while Hyomin's "Nice Body" plunges to No. 31 after debuting at No. 13 last week.

Hyosung's "Good-night Kiss" falls out of the top forty for the first time since its release, dropping to No. 43 (although it's still in the top forty of Melon's real-time digital chart), while Tiny-G's "Ice Baby" falls to No. 60.

Look out for some more interesting moves on next week's chart, which will include new entries from Girl's Day, B1A4, Kim Hyun Joong, and Henry.

No. 1. Huh Gak & Eunji - Break Up To Make Up

No. 2. f(x) - Red Light

No. 10. f(x) - Milk

No. 16. f(x) - All Night

Korean songstress Younha has just scored what could be the biggest hit of her career with the new version of her 2008 duet with Epik High, "Umbrella." The song debuts at No. 1 on the Gaon digital chart this week, becoming Younha's first No. 1 since the chart launched back in early 2010.

God's "Sky Blue Promise" follows behind at No. 2, while K.Will's "Day 1" settles for third place (after debuting at No. 2 last week).

AOA's "Short Hair" continues selling strongly, slipping to No. 7 after peaking at No. 5 last week, while B2ST's "Good Luck" is down three spots to No. 9.

A few spots lower is T-ara's latest soloist Hyomin, who debuts at No. 13 with "Nice Body." She beats the peak of both Jiyeon's solo single, "1min1sec" (No. 17), and T-ara's last single, "Do You Know Me?" (No. 19).

Hyomin's labelmates Davichi debut at No. 20 with "Don't Move," which becomes the duo's lowest-charting official single ever, while rookie trio Tiny-G get the highest-charting single of their career (I think -- they have no chart history online) with "Ice Baby" at No.  44.

Last and sadly least is FIESTAR, who bomb at No. 51 with their sexually-charged new single "One More." The song, which has caused controversy for containing lyrics about having a threesome, beats the peak of their second single "We Don't Stop" (No. 66), but lags behind "Vista" and "I Don't Know," both of which peaked at No. 27.

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

No. 1. Younha - Umbrella

No. 13. Hyomin - Nice Body feat. Loco

No. 20. Davichi - Don't Move

No. 44. Tiny-G - Ice Baby

No. 51. FIESTAR - One More

As expected, Hyorin's solo single, "One Way Love," has taken the top spot on the Gaon chart in its first week out. The SISTAR superstar dethrones last week's chart-topper, 2NE1's "Missing You," which slips one spot to No. 2. The point difference between the two songs is minimal, proving that 2NE1 are actually showing some real staying power with "Missing You" -- something that their last two singles didn't do.

Anyway, with "One Way Love" topping the charts, SISTAR's total career No. 1s now stands at seven: four as a group, two as soloists, and one as the SISTAR19 subunit.

San E's "Break Up Dinner" climbs two spots to No. 3, while Hyorin's other solo single, "Lonely," debuts at No. 4.

In even better news, VIXX's "Voodoo Doll" enters the charts at No. 7 to become the group's first top ten hit and highest-charting single of their career. Their previous best was "G.R.8.U.," which reached No. 14 back in October. The boys also debut at No. 1 on the album chart with their first full-length album, Voodoo, solidifying their status as one of K-pop's hottest rising stars right now.

A few spots down, Younha's "It's Okay" arrives at No. 9, while miss A's "Hush" slips to No. 11 after two weeks in the top ten.

2AM's new single, "Regret," debuts at No. 18, making it their lowest-charting lead single by a fairly large margin, while Crayon Pop's "Lonely Christmas" enters at No. 35 to become the group's third top forty entry after "Bar Bar Bar" and "Dancing Queen 2.0".

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

No. 1. Hyorin - One Way Love

No. 4. Hyorin - Lonely

No. 7. VIXX - Voodoo Doll

No. 18. 2AM - Regret

No. 35. Crayon Pop - Lonely Christmas

T-ara N4 may be winning our current Pop-Off against Emblem3, but they weren't able to win the girl group battle that's currently being waged on the K-pop charts. The T-ara subunit debuted at No. 11 on this week's official GAON singles chart with "Countryside Life," four spots lower than SECRET's new single, "YooHoo," at No. 7. However, it's 4minute that has the biggest hit on its hands out of the three groups, with "What's Your Name?" rocketing up fifteen spots to No. 2. The song narrowly missed out on the top spot, with Roy Kim's "Spring Spring Spring" barely snatching the victory this week.

It's interesting to see how well 4minute's new single has done when it initially looked like it would be one of the lowest performers out of the current comeback rush. It wasn't good for the group's image when SISTAR creamed them on the charts last year with "Alone," but with "What's Your Name?," they've completely turned things around and proved that they're very much still a key player in the Korean girl group scene.

Elsewhere, PSY's "Gentleman" continues to slip, falling three spots to No. 5, while Geeks' "Wash Away," featuring Ailee, debuts at No. 4, and Vibe's "I Want To Meet You At Least Once" arrives at No. 6.

A little further down, Younha's "The Real Reason Why We Broke Up" debuts at No. 16, while SHINee manages to jump 17 spots from last week to No. 15 with "Why So Serious?." It's unlikely that it will climb any higher next week, which will make it the lowest-charting single of SHINee's career thus far.

The new Hello Venus single, "Do You Want Some Tea?," debuts at No. 37, which is the same position that their last single, "What Are You Doing Today?," peaked at. By this stage, the group should be doing a bit better on the charts, so hopefully they can rise a few spots over the coming weeks.

On next week's chart, you can expect big things from Lee Hyori and 4men, as well as new entries from B1A4, UV, and Nine Muses.

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

No. 2. 4minute - What's Your Name?

No. 4. Geeks feat. Ailee - Wash Away

No. 6. Vibe - I Want To Meet You At Least Once

No. 16. Younha - The Real Reason Why We Broke Up

No. 37. Hello Venus - Do You Want Some Tea?

YG Entertainment's rookie soloist, Lee Hi, has topped the charts for the second time in her short career with her latest single, "Rose." The song debuts at No. 1 on the GAON singles chart this week, marking an improvement from last month's "It's Over," which under-performed after briefly peaking at No. 3. And unlike "It's Over," which experienced strong sales for a short moment then fizzled out, "Rose" is still selling well on the digital charts and should eventually prove that Lee Hi is more than just a one hit wonder.

Coming in second place is Busker Busker's spring classic, "Cherry Blossom Ending," which has been racing back up the charts in recent weeks despite being a year old.

Female songstress and radio DJ, Younha, is the biggest mover and shaker of the week, with her new ballad, "It's Not Like That," jumped up 34 places to No. 3. She'll certainly be pleased with the results considering the relatively poor performance of her previous single, "Run."

Also climbing the charts this week is INFINITE's new single, "Man In Love," which rises one place to No. 6. There was some controversy on the weekend when the boy band won first place on Inkigayo, but their current chart showing proves that their digital sales are much stronger than most people realized.

Vocal duo, Davichi, are still going strong with two songs in the top ten: former chart-topper, "Turtle," is at No. 4, while "Just The Two of Us" falls to No. 9.

Meanwhile, Girl's Day's "Expectation" falls out of the top ten this week, down five spots to No. 14. Despite the dip, the song is still performing well by the group's standards, and will definitely go down as their second biggest hit after 2011's "Twinkle Twinkle."

One act that continues to exceed expectations is rookie girl group, Ladies' Code, who have just reached a new peak of No. 34 with their debut single, "Bad Girl." As we stated last week, a rookie from a small agency cracking the top forty is impressive, but it's even more impressive when they manage to stay there, and Ladies' Code have held on for three consecutive weeks now.

Last and probably least is the new ZE:A sub-unit, ZE:A FIVE, who debut at No. 42 with their first single, "The Day We Broke Up." ZE:A has never been particularly popular outside of the group's star member, Kwanghee, and it looks like their unit promotions isn't going to change that.

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

No. 1. Lee Hi - Rose

No. 2. Busker Busker - Cherry Blossom Ending

No. 3. Younha - It's Not Like That

No 6. INFINITE - Man In Love

No. 34. Ladies' Code - Bad Girl