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.

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.