Just 12 hours before global sensation BTS released its newest album “Map of the Soul: 7” last month, the group dropped a 30-second preview of lead track “On” -- not on Facebook, Twitter or Instagram, but on TikTok.

TikTok, a short-form video-sharing app owned by Chinese company ByteDance, is becoming the go-to platform for K-pop. Since its release in 2016, the app has witnessed a meteoric rise. According to app analytics site Sensor Tower, its downloads worldwide have exceeded 1.7 billion to date, even outpacing those of bigger rivals Facebook, Instagram, Twitter and Snapchat in 2019.

The app’s appeal to the K-pop industry is in its very nature. The largest portion of TikTok users are Generation Z -- those born from the mid-1990s to early 2010s -- in line with the age range of many idols’ fan bases. Its 15- to 60-second videos also match the length of a song’s chorus. And easy to use, the platform demands users’ participation: 66 percent of them create and post their own videos, according to TikTok Korea. That makes content go viral much more quickly than on other social media platforms.

Because of the app's partnerships with music streaming services, users also do not have to pay copyright fees to insert background music in videos -- a convenience that catapulted dance clips to take off in the first place, with many more to come.

BTS, whose popularity had been attributed to their active communication with fans via Twitter and YouTube, also joined TikTok last year. In three hours and 31 minutes, the group’s account attracted 1 million followers, setting a mark recognized by the Guinness World Records.

Since then, the septet has launched several dance challenges with hashtags, including for J-Hope’s hip-hop single with Becky G. The group has garnered more than 315 million views and 42 million likes on the app, while many fans are joining the app just to support the group.