These days when a top 40 K-pop song starts with a classical guitar, you know what you're in for: a ballad that sounds very close to a hundred others, most likely recently featured on a Korean soap opera.

That's what makes the moment that the beat kicks in on the debut single "Perfume" from B2ST's Yoseop And Cube Girls so exciting.

All of a sudden it's clear the song is something quite different.

The production on "Perfume" is solid and simple (actually, an instrument or two more wouldn't have hurt the song, a rare problem for K-pop producers), but what stands out the most is the singing.

The vocals are laid back and unforced.

At his best points in the song, Yoseop even slips into Michael Jackson territory with his soaring, silky vocals, which is just about the highest compliment you can pay any singer.

The Cube Girls also deliver what sounds like a good old-fashioned live performance in the recording studio, without too much processing or autotune.

It's funny how real singing just feels better for the listener.

And the hooks are solid, memorable without being cheesy. The songwriter delivered a catchy, feel good composition and Yoseob And Cube Girls knocked it out of the park.

Released by Cube Entertainment, the record label representatives claim it is their first 'voice project', focusing purely on the music, according to the website allkpop, a creative decision that paid off.

The one mildly embarrassing moment in the song comes when one of the Cube Girls is asked to lay down a rap in the song.

One a scale of one to 10 on the embarrassment Richter Scale, this is a two, maybe a three. It's not that the rap is so terrible, it is just oddly placed in a song that is otherwise pretty flawlessly produced.

But all rapping aside, the best feature of the song "Perfume," is that it's a throwback to all the things that made the 90s American boy bands like the Backstreet Boys and 'N Sync entertaining: the swagger and the attention to crafting a good pop song.

It's got confident singing delivering hooks that are difficult to resist. That is a pretty devastating combination.

"Perfume" entered the Billboard Magazine K-pop Hot 100 at number 30 this week, but with a hook like that, it should come wafting into the top 10 very soon.

Check out the audio to "Perfume" featuring BEAST's Yoseob and Cube Girls with English subtitles RIGHT HERE