Are you asking where Kuaiying makes the music studio player? Follow the steps below to make it:

1. Open your phone, find and click to open Kuaiying. This software needs to be downloaded and installed by yourself.

2. After opening, find the editing soundtrack button at the top of the main page, and click the sound effects soundtrack button.

3. Find the video you want to soundtrack in the album and select it.

4. After checking, click the Done button below.

5. In the sound effects soundtrack interface, click the music button on the right below to find suitable music.

6. This page has three tabs, namely recommended music, my music, and local music. Select the location of the music and click the corresponding tab.

7. After selecting the music, click the Use button, and then click the check mark in the lower right corner of the interface that appears to succeed.