You will receive notifications when someone follows/mentions your account or likes/comments your musical.ly videos. Moreover you get a notification if someone reuses your original sound, asks you a question.
To personalize your notifications:
- Go to your profile page
- Tap on the top-right corner and select “Settings”
- Select “Push Notification” under the “ACCOUNT SETTING” section
- You may choose to receive notifications from everyone or only from your friends by choosing between “From everyone” and “From people I follow”
To receive post notification about specific accounts that you follow, go to their profiles, tap and select “Turn on Post Notification” and you will see next to user’s nickname.