You can add music to your mashes if you have a Pro subscription.
To do it, follow these quick steps:
To create a mash, tap the Play button at the bottom of your project's screen.
Select Music from the mashing options. The options row scrolls sideways, so swipe along it to reach Music.
Tap a track to apply it — it starts playing over your mash straight away. Tap a different one if you change your mind.
Once you've found the track you want to use, adjust the volume and tap the yellow checkmark (iOS) or Done (Android).
On iOS
On Android
If you receive a copyright claim for one of our tracks, see Why is my 1SE video receiving copyright claims?