Open Instagram: Open your Instagram app on your device.

Add Audio to Story: Create a story and add your preferred audio to it.

Save the Story: Tap the 'three dots' in the top right corner and select the save option.

Open a Chat: Go to the Instagram home page and open any chat.

Select the Saved Story: Click on the camera icon and choose the saved story from your gallery.

Add Audio Again: Add the preferred audio to the saved story once more.

 Keep in Chat: Make sure 'Keep in chat' is selected in the bottom-left corner, then tap send.

Long Press the Video: Once the message is delivered, tap and hold on the video to see a host of options.

 Save the Video: Select the save option to download the story with audio to your device