It looked like A Pink were going to land their first No. 1 single this week with "LUV," but the adorable girl group were blocked from the top by legendary ballad singer Park Hyo Shin's new single, "Happy Together."

"LUV" settles for second place, but A Pink can be compensated in the fact that all five tracks from their new mini-album managed to debut in the top fifty.

A few spots down, EXID's "Up And Down" jumps a huge 27 places to No. 7. As Popdust previously reported, the sudden popularity of "Up And Down" is all down to a fan-recorded video of member Hani performing the song's sexy choreography that went viral in Korea a fortnight ago.

AOA's "Like a Cat" spends a third week in the top ten at No. 10, while rapper LOCO debuts at No. 19 with "You Don't Know."

GOT7's "Stop Stop It" --despite its disappointing debut last week-- manages to spend a second week in the top forty at No. 38, while MAMAMOO's "Piano Man" rockets up 46 places to No. 41.

MBLAQ's gorgeous seasonal ballad "Spring, Summer, Fall, And... Winter" arrives at No. 60, followed by Sunny Hill's "Here I Am" at No. 68.

Ex-KARA member Nicole continues to struggle with her solo single "MAMA," which slips down to No. 80, but it's nothing compared to T-ara's Korean remake of the Chinese novelty hit "Little Apple," which debuts at No. 91 -- the lowest position of the group's career. However, considering that it's just a one-off special collaboration single that isn't being fully promoted in Korea, you can't really hold its chart position up to T-ara's official single releases.

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

No. 2. A Pink - LUV

No. 7. EXID - Up And Down

No. 41. MAMAMOO - Piano Man

No. 60. MBLAQ - Spring, Summer, Fall, And... Winter

No. 91. T-ara - Little Apple

With spring now in full bloom in Korea, idol bubblegum pop has taken a backseat on the charts to make way for ballads and acoustic K-indie ditties. This week's No. 1 single belongs to esteemed balladeer Park Hyo-shin and his new single "Wildflower," which entered at No. 2 last week. He pushes last week's chart-topper, rookie singer Bro's "That Kind of Man," down to No. 5.

Girl group A Pink debut at No. 2 with Mr. Chu, which becomes the highest-charting song of their three-year career. Their previous best was "NoNoNo," which peaked at No. 3 last year.

Orange Caramel's "Catallena" sits at No. 6 again, marking the fourth consecutive week that it's held the position.

A few spots down is Crayon Pop, who debut at a solid No. 10 with the addictive "UH-EE." The song (which sounds like The Vengaboys gone trot) has been criticized for not matching the success of their signature smash "Bar Bar Bar," but it's actually the group's second highest-charting song to date, so it's really not doing too bad by their standards.

4minute's "Whatcha Doin' Today" continues to slide, slipping down to No. 12 after initially debuting at No. 1 three weeks ago.

There's some good news for struggling K-diva NS Yoon-G, who scores the second top twenty entry of her career with the sexy "Yasisi" at No. 17. While Yoon-G still hasn't broken through with a proper hit song yet, she's been slowly but surely improving on the charts over the past five years.

Further down we've got Super Junior-M, who debut at No. 28 with "Swing." Considering that Super Junior have never fared too well with digital sales, a top thirty single from their subunit isn't too bad.

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

No. 1. Park Hyo-shin - Wildflower

No. 2. A Pink - Mr. Chu

No. 10. Crayon Pop - UH-EE!

No. 17. NS Yoon-G - Yasisi

No. 28. Super Junior-M - Swing