https://techcrunch.com/2021/04/07/as-competition-heats-up-tiktok-announces-six-new-interactive-music-effects-for-creators/

TikTok today is doubling down on its roots as a music-backed creation app with the launch of a half dozen new music effects for creators. The effects, which offer interactivity, visualizations, animations and more, will roll out over the next few weeks, starting with the launch of Music Visualizer. This effect is now available to TikTok’s global user base and runs real-time beat tracking to animate a retro greenscreen landscape, the company says.

The effect was added to TikTok’s Creative Effects tray yesterday and there are already over 28,000 videos created using the new feature. The effect results in videos featuring a purple sky with multiple moons (or planets?) in the background, where the grid on the ground pulses up and down with the music.