To date, only three other K-pop tracks have reached No. 1 on the same U.S. chart: "Seven" by BTS member Jungkook, "Who" by fellow BTS member Jimin and "APT." by Blackpink's Rose. Among K-pop groups, BTS had held the highest ranking on the chart at No.

Ian Eisendrath, the executive music producer of the surprise Netflix hit — which has been gaining steam on real-world music charts — breaks down how the songs came together.

Sechrist, who happens to be married to Kang, is the veteran animator tasked with designing the cat who would be king of derps.