To play music while recording audio on your Huawei phone, you can follow the steps below to set it up:

1. Open the "Audio Recorder" application.

2. Click the "Record" button to start recording audio.

3. During the recording process, pull down the notification bar, find the music being played in the notification menu, and click to enter the music player interface.

4. Adjust the music player volume and the audio player volume to achieve the desired volume balance.

5. Adjust the music player's playlists and controls as needed.

6. If you need to stop recording or music playback, you can find the running application in the notification menu and select the corresponding operation.

Please note that recording and music playback at the same time will put greater resource pressure on the mobile phone, so it is recommended to operate on a mobile phone with higher configuration to avoid the audio quality of the recording being damaged or Problems such as lagging occur. At the same time, in scenarios with high sensitivity requirements, it is recommended to conduct a trial recording or listening trial in advance to determine whether the volume and quality adjustments are suitable for personal use needs.