The song "Only You" by R&B trio 4MEN jumped up 63 places this week to land in the number one slot on the Billboard K-Pop Hot 100, knocking last week's top track, BEAST's "Will You Be Alright?" down to number six.

Produced by Yoon Min Soo, the singer of the K-pop duo Vibe, and a former member of 4MEN, "Only You" was recorded for the popular South Korean television drama "Gu Family Book."

"Every time a new song comes out on the ['Gu Family Book'] soundtrack, it sweeps the charts," one member of the production team for "Only You" told CJ E&M enewsWorld.

"4Men will continue the success with the most longing love song in 'Gu Family Book' by provoking the emotions of the viewers."

"Only You" entered the chart last week.

Also in it's second week on Billboard's K-Pop Hot 100, "Short Hair" by Huh Gak and Jung Eun Ji of A Pink rose one place, to number two.

Recorded for record label A Cube Entertainment's "Blue" series, the song is featured on the collection "A Cube for Season."

The chart success of Huh Gak and Jung Eun Ji's single could be in part due to the charming music video released for "Short Hair," a love story told with two thumbs with faces drawn on them.

And then there are the "Bad Girls."

Lee Hyori's "Bad Girls" drops to number three after a month on the chart.

The song "Bad Girl" by Bumkey featuring E-Sens of Supreme Team is currently at number 4.

The debut single from the South Korean rapper, Bumkey's "Bad Girl" debuted last week at number 22.

After seven weeks on the Billboard K-Pop Hot 100, "What's Your Name" by girl group 4Minute is holding strong at the number five spot.

It is the second week in a row that the song has held that chart position.

And Psy's newest single "Gentleman" continues its decent from the number one spot.

The follow up to the international celebrity's smash hit "Gangnam Style" is slipping quickly from the K-pop top 50.

"Gentleman" is currently at number 33, down from last week's spot at number 24, in its ninth week on the Billboard charts.

CLICK HERE to see the full listings for Billboard Magazine's K-Pop Hot 100.