Open the Instagram post, reel, or story with the audio you want
Tap the audio name at the bottom of the screen
Open the audio page and copy the audio title or link if available
Use a trusted third-party Instagram audio downloader website or app
Paste the Instagram link into the downloader
Select the audio format you want, if available
Click the download button
Save the audio file to your device
Check the downloaded file in your music, downloads, or files folder
Make sure you have permission to download and use the audio