By releasing a new version of their hit Wings album coupled with four creatively challenging new songs and a truly powerful lead single, BTS continue to conquer new territory on multiple Billboard charts with the release of You Never Walk Alone. 

Most notably, the K-pop boy band's new single "Spring Day" debuts at No. 15 on Billboard's Bubbling Under Hot 100 chart for the chart dated March 4, 2017. The Bubbling Under Hot 100 acts as an extension of the 25 songs that have yet to chart on the definitive Hot 100 singles chart and are just below the top 100 slots. Like the main Hot 100 chart, rankings are based on sales, radio airplay and streaming data.

The feat is truly unprecedented given K-pop's history on Billboard's singles chart. While the group does not land on the Hot 100 comparing them to the groups that have puts into perspective how the impressive chart performance of "Spring Day."

Wonder Girls were the first K-pop act to chart on the Hot 100 with "Nobody," a song that was a megahit when released in Korea in 2008 and eventually landed on the Hot 100 a year later thanks to the group re-recording it in English and performing it on U.S. television shows. CL also landed on the Hot 100 with "Lifted," but again this was an English song promoted on The Late Late Show With James Corden. PSY is the only K-pop act to send Korean-language songs to the Hot 100 (so far, four of them), but has been assisted by an American record deal and management. To compare: BTS' "Spring Day" is almost all in Korean, had zero promotions in America, was released new music during a notoriously competitive week with the 2017 Grammy Awards, and "Spring Day" dropped on a Sunday making their charting window smaller than other releases. The accomplishment gives hope and acts as a guiding light to the burgeoning K-pop scene and gives indication of how Korean acts can continue making their mark on the American industry.

"Spring Day" sold 14,000 digital downloads in the week ending Feb. 16, according to Nielsen Music. The total puts BTS at No. 1 on World Digital Songs Sales giving the band their third No. 1 on the chart. In fact, all four new songs from You Never Walk Alone hold down the first four slots making BTS the first act on World Digital Song Sales to do so. "Day" is followed by "Not Today" (which sold 12,000), "A Supplementary Story: You'll Never Walk Alone" (8,000) and "Outro: Wings" (6,000).

Looking at You Never Walk Alone as a whole -- a repackaged version of Wings that came with four new songs -- the album debuts at No. 61 on the Billboard 200 -- extending BTS' record as the K-pop act with the most entries on America's definitive albums chart to four. So far, they've bowed with The Most Beautiful Moment in Life, Part 2 (which hit No. 171), The Most Beautiful Moment In Life: Young Forever (No. 107), and Wings (No. 26). G-Dragon and BIGBANG are the only other K-pop acts to boast more than one entry on the Billboard 200. 

And as if they couldn't have more to celebrate, You Never Walk Alone debuts at No. 1 on World Albums giving BTS their third chart-topper on that ranking. 

Check back to Billboard.com the morning of Wednesday, Feb. 22 to see BTS' accomplishments when all the charts are refreshed.