If you have a Pro membership, you can add music to your mashes.
To do it, follow these quick steps:
Tap the Play/Mash button at the bottom-center of your project's grid view to start creating a mash.
Select "Music" from the mashing options.
To listen to the music, tap on the track's name.
Once you've found the track you want to use, adjust the volume if needed, and then tap "Done".
If you receive a copyright claim when uploading a mash using the tracks provided by us, please take a look here to learn what you can do.
You can learn more about our Pro membership here.