This is much more than a trail or an animation, the trails are AI, Click the paintbrush to turn on/off editor mode. You could delete / add trails in editor mode, you could change it by the button below the music note, if it says delete all trails it will delete all trails when you click and it is the same for adding except you have to click that button and change it to the add trail. Click on the music to disable/enable the music. Hover on the left edge of the screen to see the settings, tinker with them, it is very fun! Most importantly have fun and chill!
If it is lagging use this: https://turbowarp.org/1334060284?fps=60